AOCI (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 2,117,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	1,370,000	$ 2,117,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	0
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(612,000)	(197,000)
Other comprehensive income before reclassifications	791,000	(608,000)
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	(230,000)	(91,000)
Other Comprehensive Income (Loss), Tax	(140,000)	102,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	(191,000)	(612,000)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	2,729,000	2,267,000
Other comprehensive income before reclassifications	(1,102,000)	910,000
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(379,000)	(325,000)
Other Comprehensive Income (Loss), Tax	313,000	(123,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	1,561,000	2,729,000
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	2,117,000	2,070,000
Other comprehensive income before reclassifications	(311,000)	302,000
Amounts reclassified from accumulated other comprehensive income, before tax	(609,000)	(234,000)
Other Comprehensive Income (Loss), Tax	173,000	(21,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	1,370,000	$ 2,117,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 162,000

Amounts reclassified from accumulated other comprehensive income, before tax

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