Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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Gain (loss) incurred in hedging activities.

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Risk Management and Use of Derivative Financial Instruments - Derivative Gain Loss Recognized in Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Amount of Gain (Loss) on Derivatives Recognized in Income
Total	$ (730)	$ 1,193	$ (748)	$ (524)
Derivatives Not Designated as Hedging Instruments \| Foreign currency collars \| Other gains and (losses)
Amount of Gain (Loss) on Derivatives Recognized in Income
Amount of Gain (Loss) on Derivatives Recognized in Income	(1,368)	543	(937)	738
Derivatives Not Designated as Hedging Instruments \| Interest rate swaps \| Other gains and (losses)
Amount of Gain (Loss) on Derivatives Recognized in Income
Amount of Gain (Loss) on Derivatives Recognized in Income	0	(98)	0	(124)
Derivatives Not Designated as Hedging Instruments \| Interest rate swaps \| Interest expense
Amount of Gain (Loss) on Derivatives Recognized in Income
Amount of Gain (Loss) on Derivatives Recognized in Income	11	7	41	15
Derivatives Not Designated as Hedging Instruments \| Foreign currency forward contracts \| Other gains and (losses)
Amount of Gain (Loss) on Derivatives Recognized in Income
Amount of Gain (Loss) on Derivatives Recognized in Income	0	805	(43)	544
Derivatives Not Designated as Hedging Instruments \| Stock warrants \| Other gains and (losses)
Amount of Gain (Loss) on Derivatives Recognized in Income
Amount of Gain (Loss) on Derivatives Recognized in Income	0	(300)	(1,300)	(600)
Derivatives in Cash Flow Hedging Relationships \| Foreign currency collars \| Other gains and (losses)
Amount of Gain (Loss) on Derivatives Recognized in Income
Gain (loss) on hedging activity	0	0	0	7
Derivatives in Cash Flow Hedging Relationships \| Interest rate swaps \| Interest expense
Amount of Gain (Loss) on Derivatives Recognized in Income
Gain (loss) on hedging activity	627	340	1,491	(773)
Derivatives in Cash Flow Hedging Relationships \| Foreign currency forward contracts \| Other gains and (losses)
Amount of Gain (Loss) on Derivatives Recognized in Income
Gain (loss) on hedging activity	0	0	0	(132)
Derivatives in Cash Flow Hedging Relationships \| Interest rate caps \| Interest expense
Amount of Gain (Loss) on Derivatives Recognized in Income
Gain (loss) on hedging activity	$ 0	$ (104)	$ 0	$ (199)