Changes in AOCI by Component (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (7,401)	$ (7,415)	$ (7,310)	$ (7,269)
Other comprehensive income before reclassifications	(4)	(1)	(5)	(56)
Amounts reclassified from AOCL	113	113	339	339
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(158)	(159)	(474)	(476)
Total Other Comprehensive Loss	(49)	(47)	(140)	(193)
Ending balance	(7,450)	(7,462)	(7,450)	(7,462)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(10,051)	(10,503)	(10,277)	(10,729)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from AOCL	113	113	339	339
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0			0
Total Other Comprehensive Loss	113	113	339	339
Ending balance	(9,938)	(10,390)	(9,938)	(10,390)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,442	1,445	1,443	1,500
Other comprehensive income before reclassifications	(4)	(1)	(5)	(56)
Amounts reclassified from AOCL	0	0	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0	0	0
Total Other Comprehensive Loss	(4)	(1)	(5)	(56)
Ending balance	1,438	1,444	1,438	1,444
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,208	1,643	1,524	1,960
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from AOCL	0	0	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(158)	(159)	(474)	(476)
Total Other Comprehensive Loss	(158)	(159)	(474)	(476)
Ending balance	$ 1,050	$ 1,484	$ 1,050	$ 1,484