Other (Income) Expense Foreign Currency Gain Loss by Currency (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income Expense [Line Items]
Total (gain) loss, net	$ 352	$ (98)	$ (56)	$ (674)
British Pound [Member]
Other Income Expense [Line Items]
Total (gain) loss, net	(143)	100	(57)	12
Canadian Dollar [Member]
Other Income Expense [Line Items]
Total (gain) loss, net	(36)	(419)	(35)	304
Euro [Member]
Other Income Expense [Line Items]
Total (gain) loss, net	162	(90)	(191)	(88)
Russian Ruble [Member]
Other Income Expense [Line Items]
Total (gain) loss, net	119	426	41	(388)
Other Currencies Net [Member]
Other Income Expense [Line Items]
Total (gain) loss, net	$ 250	$ (115)	$ 186	$ (514)