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Derivative Instruments - Cash flow hedges (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Effects of derivative instruments |  |
Amount of Loss (Gain) Recognized in OCI on Derivatives (Effective Portion) | $ (260) | $ 1,616
Cash Flow Hedging |  |
Effects of derivative instruments |  |
Amount of Loss (Gain) Recognized in OCI on Derivatives (Effective Portion) | 613 | (1,031)
Amount of Gain (Loss) Recognized from Accumulated OCI into Income (Effective Portion) | 203 | (24)
Cash Flow Hedging | Interest rate contract |  |
Effects of derivative instruments |  |
Amount of Loss (Gain) Recognized in OCI on Derivatives (Effective Portion) | 613 | (1,031)
Cash Flow Hedging | Interest rate contract | Interest expense |  |
Effects of derivative instruments |  |
Amount of Gain (Loss) Recognized from Accumulated OCI into Income (Effective Portion) | $ 203 | $ (24)

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- Definition Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109978405&loc=d3e80720-113993 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 + Details
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- Definition The effective portion of gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References No definition available. + Details
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