Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	$ (63)	$ (3,298)	$ (11,985)	$ (6,112)	$ (3,298)	$ (6,112)
Accumulated other comprehensive income, tax, beginning balance	(827)	(837)	(714)	(721)	(837)	(721)
Accumulated other comprehensive income, beginning balance	764	(2,461)	(11,271)	(5,391)	(2,461)	(5,391)
Adjustment to pension benefit liability, taxes	10	10	6	7
Other comprehensive income (loss), net of tax	788		2,833		4,013	(3,047)
AOCI before tax, ending balance	735	(63)	(9,146)	(11,985)	735	(9,146)
Accumulated other comprehensive income, tax, ending balance	(817)	(827)	(708)	(714)	(817)	(708)
Accumulated other comprehensive income, ending balance	1,552	764	(8,438)	(11,271)	1,552	(8,438)
Accumulated Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	2,326	(872)	(10,071)	(4,173)	(872)	(4,173)
Other comprehensive income adjustments	761	3,198	2,815	(5,898)
Other comprehensive income (loss), net of tax	761	3,198	2,815	(5,898)
AOCI before tax, ending balance	3,087	2,326	(7,256)	(10,071)	3,087	(7,256)
Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income adjustments	37	37	24	25
Other comprehensive income (loss), net of tax	27	27	18	18
Minimum post retirement benefit plan adjustments | Accumulated Defined Benefit Plans Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before tax, beginning balance	(2,389)	(2,426)	(1,914)	(1,939)	(2,426)	(1,939)
Other comprehensive income adjustments	37	37	24	25
AOCI before tax, ending balance	$ (2,352)	$ (2,389)	$ (1,890)	$ (1,914)	$ (2,352)	$ (1,890)