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Income Taxes - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Dec. 30, 2017
Income Taxes [Line Items]      
Provision for income taxes $ 4,000 $ 6,000  
U.S. federal corporate tax rate 21.00%   35.00%
Percentage of disallowance of entertainment expense 100.00%    
Unrecognized tax benefits     $ 1,000,000
Unrecognized tax benefits recognition impact on income tax rate     $ 0
Federal      
Income Taxes [Line Items]      
Income tax returns examination period 3 years    
Minimum | State Jurisdictions      
Income Taxes [Line Items]      
Income tax returns examination period 3 years    
Maximum | State Jurisdictions      
Income Taxes [Line Items]      
Income tax returns examination period 5 years