Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019	Jan. 01, 2018	Jan. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (7,979)	$ (5,336)
Balance at end of period	(6,112)	(7,979)	$ (5,336)
Tax (Benefit) Expense
Balance at beginning of period	(745)	(970)
Minimum pension and post retirement benefit plan adjustments	24	225
Balance at end of period	(721)	(745)	(970)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(7,234)	(4,366)
Minimum pension and post retirement benefit plan adjustments	77	723
Cumulative effect of new accounting principle in period of adoption				$ 1,582	$ 274	$ 0
Foreign currency translation adjustment	(1,843)	2,868	(3,355)
Balance at end of period	(5,391)	(7,234)	(4,366)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(5,939)	(2,698)
Other Comprehensive Income (Loss), before Tax	1,766	(3,241)
Balance at end of period	(4,173)	(5,939)	(2,698)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Foreign currency translation adjustment	1,766	(3,241)
Minimum pension and post retirement benefit plan adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(2,040)	(2,638)
Other Comprehensive Income (Loss), before Tax	(101)	(948)
Balance at end of period	$ (1,939)	$ (2,040)	$ (2,638)
Accounting Standards Update 2018-02
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(350)
Accounting Standards Update 2018-02 | Minimum pension and post retirement benefit plan adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					$ (350)