Derivative Financial Instruments - Gains and Losses before Taxes on Derivatives (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2017
Derivative Financial Instruments
Loss Recognized in AOCI (Effective Portion)	$ (484)	$ 57
Loss Reclassified from AOCI into Operations (Effective Portion)	1,046	(769)
Loss Recognized in Operations on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)		30
Interest Rate Swap
Derivative Financial Instruments
Loss Recognized in AOCI (Effective Portion)	(484)	57
Loss Reclassified from AOCI into Operations (Effective Portion)	$ 1,046	(769)
Loss Recognized in Operations on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)		$ 30

Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 20
-Section 45
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109974929&loc=SL110061172-113977

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580

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