Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.8.0.1
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Thousands
4 Months Ended
Apr. 22, 2018
Apr. 16, 2017
Loss Contingencies [Line Items]    
Litigation contingencies $ 4,000 $ 0
Compensation-related Claims    
Loss Contingencies [Line Items]    
Litigation contingencies $ 4,000