Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			$ 4,882
Total change in hedge fair value recorded in Other Comprehensive Income			1,145
Amounts reclassified from accumulated other comprehensive income			49
Net change related to derivatives	$ 395	$ 55	1,194	$ 116
Net current-period other comprehensive income (loss)			(5,694)
Balance	(812)		(812)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			6,842
Net current-period other comprehensive income (loss)			(6,989)
Balance	(147)		(147)
Unrealized Gain (Losses) On Available-For-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(14)
Net current-period other comprehensive income (loss)			(2)
Balance	(16)		(16)
Accrued Pension Service Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			(1,969)
Net current-period other comprehensive income (loss)			103
Balance	(1,866)		(1,866)
Hedge Accounting Reserve [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			23
Total change in hedge fair value recorded in Other Comprehensive Income			1,145
Amounts reclassified from accumulated other comprehensive income			49
Net change related to derivatives			1,194
Net current-period other comprehensive income (loss)			1,194
Balance	$ 1,217		$ 1,217