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Employee Benefit Programs (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
12 Months Ended | 156 Months Ended | ||
|---|---|---|---|---|
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Dec. 28, 2014
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Dec. 29, 2013
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Dec. 30, 2012
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Dec. 28, 2014
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| Employee Stock Purchase Plan | ||||
| Compensation expense | $ 4.2us-gaap_AllocatedShareBasedCompensationExpense | $ 3.8us-gaap_AllocatedShareBasedCompensationExpense | $ 3.8us-gaap_AllocatedShareBasedCompensationExpense | |
| Employee Defined Contribution Plan | ||||
| Minimum age of employees to be eligible to participate in defined contribution plan | 21 years | |||
| Percentage of matching contribution | 25.00%rrgb_DefinedContributionPlanEmployerMatchPercent | |||
| Percentage of maximum compensation matched by employer | 4.00%rrgb_DefinedContributionPlanEmployerMatchingContributionPercentMaximum | |||
| Matching contribution expense | 0.3us-gaap_DefinedContributionPlanCostRecognized | 0.3us-gaap_DefinedContributionPlanCostRecognized | 0.3us-gaap_DefinedContributionPlanCostRecognized | |
| Employee Stock Purchase Plan | ||||
| Employee Stock Purchase Plan | ||||
| Maximum percentage of base compensation that can be contributed by the eligible team members |
15.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
15.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Estimated subscription date fair value (as a percent) |
85.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Requisite employment period to be eligible to participate in the plan | 1 year | |||
| Requisite working hours per week to be eligible to participate in the plan | 20 hours | |||
| Operational period of the plan | 6 months | |||
| Number of shares outstanding |
300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Number of shares issued under the plan |
12,532us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
240,570us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Number of shares available for future issuance under the plan |
59,430us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
59,430us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Risk-free interest rate (as a percent) |
0.12%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
0.14%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Expected life | 6 months | 6 months | ||
| Expected volatility (as a percent) |
41.22%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
42.30%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Dividend yield (as a percent) |
0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Weighted average fair value per share at grant date (in dollars per share) |
$ 14.42us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
$ 11.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Compensation expense |
0.2us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
0.2us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
0.2us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_PlanNameAxis = us-gaap_EmployeeStockMember |
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| Deferred compensation, excluding share-based payments and retirement benefits | Employee Deferred Compensation Plan | ||||
| Employee Deferred Compensation Plan | ||||
| Deferred payment, participant limit per calendar year as a percentage of base salary |
75.00%rrgb_DeferredCompensationArrangementParticipantLimitDeferredPaymentAsPercentageOfBaseSalary / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Deferred payment, participant limit per calendar year as a percentage of variable compensation and commissions |
100.00%rrgb_DeferredCompensationArrangementParticipantLimitDeferredPaymentAsPercentageOfVariableCompensationAndCommissions / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Deferred payment, maximum employer match |
25.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Deferred payment, maximum matching contribution percentage |
4.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Deferred compensation expense |
0.3us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
0.2us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Other assets, net | Deferred compensation, excluding share-based payments and retirement benefits | Employee Deferred Compensation Plan | ||||
| Employee Deferred Compensation Plan | ||||
| Liability for participant contributions and investment income |
3.8us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Cash surrender value of company-owned whole-life insurance contracts |
2.9us-gaap_CashSurrenderValueOfLifeInsurance / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Deferred compensation assets |
5.7rrgb_DeferredCompensationAssets / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
5.7rrgb_DeferredCompensationAssets / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Other non-current liability | Deferred compensation, excluding share-based payments and retirement benefits | Employee Deferred Compensation Plan | ||||
| Employee Deferred Compensation Plan | ||||
| Liability for participant contributions and investment income |
5.7us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
3.0us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
5.7us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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| Cash surrender value of company-owned whole-life insurance contracts |
$ 3.8us-gaap_CashSurrenderValueOfLifeInsurance / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = us-gaap_DeferredCompensationExcludingShareBasedPaymentsAndRetirementBenefitsMember / us-gaap_PlanNameAxis = rrgb_EmployeeDeferredCompensationPlanMember |
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- Definition
The limit of annual amount that can be deferred by an employee to the plan per calendar year as a percentage of base salary. No definition available.
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- Definition
The limit of annual amount that can be deferred by an employee to the plan per calendar year as a percentage of variable compensation and commissions. No definition available.
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- Definition
Deferred Compensation Assets No definition available.
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- Definition
Represents the minimum age of employees to be eligible to participate in the defined contribution plan. No definition available.
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- Definition
Maximum percentage of employees' compensation that is deferred by plan participants for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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- Definition
The employer matching contribution as a percentage of the employee contributions under the defined contribution plan. No definition available.
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- Definition
Represents the minimum working hours per week required to be eligible to participate in the employee stock purchase plan. No definition available.
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- Definition
Represents the operational period for employee stock purchase plan. No definition available.
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- Definition
Represents the minimum employment period required to be eligible to participate in the employee stock purchase plan. No definition available.
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The compensation expense recognized during the period pertaining to the deferred compensation arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). No definition available.
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- Definition
The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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- Definition
Percentage employer matches of the employee's percentage contribution matched. No definition available.
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- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Purchase price of common stock expressed as a percentage of its fair value. No definition available.
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- Definition
Number of shares issued during the period as a result of an employee stock purchase plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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