Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Shareholders' Equity - Components of Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income $ 1,028 $ (1,590) $ 908 $ (1,142)
Total Other Comprehensive Income (Loss) 1,028 (1,590) 908 (1,142)
Foreign Currency Translation Adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income 884 (1,805) 614 (1,572)
Total Other Comprehensive Income (Loss) 884 (1,805) 614 (1,572)
Amortization of Prior Service Cost        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification to General and Administrative Expense 100 101 201 202
Amortization of Net Actuarial Losses        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification to General and Administrative Expense 86 172 171 343
Retirement Liability Adjustment        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income 144 215 294 430
Tax Benefit (42) (58) (78) (115)
Total Other Comprehensive Income (Loss) $ 144 $ 215 $ 294 $ 430