Retirement Plans - Summary of Accumulated Other Comprehensive loss (Details) - Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Post-Retirement Life Insurance Plan
Accumulated Other Comprehensive Loss
Beginning balance	$ (51)	$ (608)
Amortization of retirement benefits, net of tax	0	64
Net actuarial gain (loss)	(58)	493
Ending balance	(109)	(51)
UNITED STATES
Accumulated Other Comprehensive Loss
Beginning balance	91,237	88,830
Amortization of retirement benefits, net of tax	(2,851)	(4,995)
Net actuarial gain (loss)	3,777	7,402
Settlement charges	(91,851)
Foreign exchange impact	0	0
Ending balance	312	91,237
Foreign Plan
Accumulated Other Comprehensive Loss
Beginning balance	1,901	1,900
Amortization of retirement benefits, net of tax	(152)	(146)
Net actuarial gain (loss)	27	14
Settlement charges	0
Foreign exchange impact	27	133
Ending balance	$ 1,803	$ 1,901