Accumulated Other Comprehensive Income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 4,882,000
Total change in hedge fair value recorded in Other Comprehensive Income	1,520,000
Amounts reclassified from accumulated other comprehensive income	(963,000)
Net change related to derivatives	557,000	$ 340,000	$ (65,000)
Net current-period other comprehensive income (loss)	(6,839,000)
Balance	(1,957,000)	4,882,000
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	6,842,000
Total change in hedge fair value recorded in Other Comprehensive Income
Amounts reclassified from accumulated other comprehensive income
Net change related to derivatives
Net current-period other comprehensive income (loss)	(7,539,000)
Balance	(697,000)	6,842,000
Net of income tax benefit (expense)	(59,000)
Unrealized Gain (Losses) On Available-For-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(14,000)
Total change in hedge fair value recorded in Other Comprehensive Income
Amounts reclassified from accumulated other comprehensive income
Net change related to derivatives
Net current-period other comprehensive income (loss)	(4,000)
Balance	(18,000)	(14,000)
Accrued Pension Service Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,969,000)
Total change in hedge fair value recorded in Other Comprehensive Income
Amounts reclassified from accumulated other comprehensive income
Net change related to derivatives
Net current-period other comprehensive income (loss)	147,000
Balance	(1,822,000)	(1,969,000)
Net of income tax benefit (expense)	(60,000)
Hedge Accounting Reserve [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	23,000
Total change in hedge fair value recorded in Other Comprehensive Income	1,520,000
Amounts reclassified from accumulated other comprehensive income	(963,000)
Net change related to derivatives	557,000
Net current-period other comprehensive income (loss)	557,000
Balance	580,000	$ 23,000
Net of income tax benefit (expense)	$ 290,000