Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Components of Other Comprehensive Income (Loss) (Details)

v3.20.2
Shareholders' Equity - Components of Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive income $ 1,025 $ 1,028 $ (1,064) $ 908
Foreign Currency Translation Adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive income 810 884 (1,494) 614
Amortization of Prior Service Cost        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification to General and Administrative Expense 100 100 201 201
Amortization of Net Actuarial Losses        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification to General and Administrative Expense 173 86 344 171
Retirement Liability Adjustment        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax Benefit (58) (42) (115) (78)
Other comprehensive income $ 215 $ 144 $ 430 $ 294