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Income Taxes - Components of Income, Provision For and Reconciliation of Tax (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 29, 2018
Sep. 29, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 30, 2017
Sep. 30, 2017
Jul. 01, 2017
Apr. 01, 2017
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Income Taxes                      
Taxable year period (in years)                 3 years    
Gross annual receipts to be maintained                 $ 500,000    
Base erosion tax (in percentage)                 3.00%    
FDII deduction calculated                 $ 100    
Income before provision for income taxes:                      
U.S.                 21,118 $ 12,248 $ 16,905
Foreign                 7,815 2,916 4,984
Income before provision for income taxes and noncontrolling interest $ 8,331 $ 4,939 $ 9,737 $ 5,926 $ (898) $ 5,535 $ 5,919 $ 4,608 28,933 15,164 21,889
Currently payable:                      
Federal                 4,015 4,515 (770)
Foreign                 1,487 493 664
State                 1,788 804 (637)
Currently payable                 7,290 5,812 (743)
Deferred:                      
Federal                 (384) 1,809 5,562
Foreign                 (88) (85) 124
State                 (357) (73) 2,713
Deferred                 (829) 1,651 8,399
Provision (benefit) for income taxes                 $ 6,461 $ 7,463 $ 7,656
Reconciliation of tax rates with the federal statutory rate                      
Federal statutory rate (as a percent)                 21.00% 35.00% 35.00%
State income taxes, net of federal income tax benefit (as a percent)                 4.90% 3.90% 6.10%
Tax law changes (as a percent)                 0.90% 23.70% (0.30%)
Share-based compensation (as a percent)                 (6.30%) (15.80%)  
Nondeductible/nontaxable items (as a percent)                 2.90% 5.10% 3.00%
Foreign rate differential (as a percent)                   (2.80%) (3.30%)
Losses benefited/change in valuation allowance (as a percent)                   (0.30%) (4.90%)
Uncertain tax positions (as a percent)                 (1.10%) (0.10%) (0.20%)
Other (as a percent)                   0.50% (0.40%)
Effective tax rate (as a percent)                 22.30% 49.20% 35.00%