Annual report pursuant to Section 13 and 15(d)

Description of Business and Summary of Significant Accounting Policies (Details 5)

v2.4.1.9
Description of Business and Summary of Significant Accounting Policies (Details 5) (USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 4 Months Ended 12 Months Ended
Dec. 28, 2014
Oct. 05, 2014
Jul. 13, 2014
Dec. 29, 2013
Oct. 06, 2013
Jul. 14, 2013
Apr. 20, 2014
Apr. 21, 2013
Dec. 28, 2014
fund
entree
Dec. 29, 2013
Dec. 30, 2012
Revenue Recognition                      
Revenue related to unredeemed gift card breakage                 $ 2,284,000us-gaap_RevenueRecognitionGiftCardsBreakage $ 2,106,000us-gaap_RevenueRecognitionGiftCardsBreakage $ 1,486,000us-gaap_RevenueRecognitionGiftCardsBreakage
Unearned gift card revenue 36,900,000us-gaap_AccruedLiabilitiesForUnredeeemedGiftCards     29,800,000us-gaap_AccruedLiabilitiesForUnredeeemedGiftCards         36,900,000us-gaap_AccruedLiabilitiesForUnredeeemedGiftCards 29,800,000us-gaap_AccruedLiabilitiesForUnredeeemedGiftCards  
Term of franchise rights                 20 years    
Additional term of franchise rights                 10 years    
Number of entrees to be purchased for each free entree                 9rrgb_NumberOfEntreesToBePurchasedForEachFreeEntree    
Maximum period over which member may redeem reward after award is earned                 60 days    
Unearned loyalty revenue 8,100,000rrgb_UnearnedLoyaltyRevenue     5,900,000rrgb_UnearnedLoyaltyRevenue         8,100,000rrgb_UnearnedLoyaltyRevenue 5,900,000rrgb_UnearnedLoyaltyRevenue  
Advertising                      
Advertising and marketing costs                 43,500,000us-gaap_MarketingAndAdvertisingExpense 37,000,000us-gaap_MarketingAndAdvertisingExpense 33,500,000us-gaap_MarketingAndAdvertisingExpense
Number of marketing and national media advertising funds to which the entity and franchisees must contribute a minimum percentage of revenue                 2rrgb_NumberOfMarketingAndAdvertisingFunds    
Earnings Per Share                      
Weighted average stock options outstanding excluded from computation of diluted earnings per share (in shares)                 65us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 2us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 305us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Net income $ 3,939,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 7,208,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 9,470,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 6,959,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic [1] $ 4,661,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 11,139,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 11,944,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 9,480,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 32,561,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 32,239,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 28,331,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Basic weighted-average shares outstanding                 14,237us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 14,225us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 14,411us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Dilutive effect of stock options and awards (in shares)                 210us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 285us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 258us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Diluted weighted average shares outstanding                 14,447us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 14,510us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 14,669us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Earnings per share:                      
Basic (in dollars per share) $ 0.28us-gaap_EarningsPerShareBasic $ 0.51us-gaap_EarningsPerShareBasic $ 0.66us-gaap_EarningsPerShareBasic $ 0.49us-gaap_EarningsPerShareBasic [1] $ 0.33us-gaap_EarningsPerShareBasic $ 0.78us-gaap_EarningsPerShareBasic $ 0.83us-gaap_EarningsPerShareBasic $ 0.67us-gaap_EarningsPerShareBasic $ 2.29us-gaap_EarningsPerShareBasic $ 2.27us-gaap_EarningsPerShareBasic $ 1.97us-gaap_EarningsPerShareBasic
Diluted (in dollars per share) $ 0.28us-gaap_EarningsPerShareDiluted $ 0.50us-gaap_EarningsPerShareDiluted $ 0.65us-gaap_EarningsPerShareDiluted $ 0.48us-gaap_EarningsPerShareDiluted [1] $ 0.32us-gaap_EarningsPerShareDiluted $ 0.77us-gaap_EarningsPerShareDiluted $ 0.82us-gaap_EarningsPerShareDiluted $ 0.66us-gaap_EarningsPerShareDiluted $ 2.25us-gaap_EarningsPerShareDiluted $ 2.22us-gaap_EarningsPerShareDiluted $ 1.93us-gaap_EarningsPerShareDiluted
Minimum                      
Revenue Recognition                      
Royalties as a percentage of franchised adjusted gross restaurant sales                 3.00%rrgb_RoyaltiesAsPercentageOfFranchisedAdjustedGrossSales
/ us-gaap_RangeAxis
= us-gaap_MinimumMember 		   
Maximum                      
Revenue Recognition                      
Royalties as a percentage of franchised adjusted gross restaurant sales                 4.00%rrgb_RoyaltiesAsPercentageOfFranchisedAdjustedGrossSales
/ us-gaap_RangeAxis
= us-gaap_MaximumMember 		   
[1] During the fourth quarter of fiscal year 2013, it was determined that four Company-owned restaurants were impaired. The Company recognized a pre-tax non-cash impairment charge of $1.5 million for these restaurants.