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Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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- Definition

Fair value as of the balance sheet date of all foreign currency derivatives designated as cash flow hedging instruments.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 4B
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Risk Management and Use of Derivative Financial Instruments - Foreign Currency Derivatives Details (Details) € in Thousands, £ in Thousands, kr in Thousands, $ in Thousands	Jun. 30, 2020 USD ($) instrument	Jun. 30, 2020 NOK (kr) instrument	Jun. 30, 2020 EUR (€) instrument	Jun. 30, 2020 GBP (£) instrument
Derivative Disclosure
Fair value, foreign currency derivatives	$ 24,407
Derivatives Designated as Hedging Instruments \| Designated as Cash Flow Hedging Instruments \| Foreign currency collars \| EUR
Derivative Disclosure
Number of Instruments \| instrument	88	88	88	88
Notional Amount \| €			€ 296,800
Fair value, foreign currency derivatives	$ 20,322
Derivatives Designated as Hedging Instruments \| Designated as Cash Flow Hedging Instruments \| Foreign currency collars \| GBP
Derivative Disclosure
Number of Instruments \| instrument	64	64	64	64
Notional Amount \| £				£ 42,400
Fair value, foreign currency derivatives	$ 4,035
Derivatives Designated as Hedging Instruments \| Designated as Cash Flow Hedging Instruments \| Foreign currency collars \| NOK
Derivative Disclosure
Number of Instruments \| instrument	2	2	2	2
Notional Amount \| kr		kr 1,300
Fair value, foreign currency derivatives	$ 17
Derivatives Designated as Hedging Instruments \| Derivatives in Net Investment Hedging Relationships \| Foreign currency collars \| NOK
Derivative Disclosure
Number of Instruments \| instrument	1	1	1	1
Notional Amount \| kr		kr 2,500
Fair value, foreign currency derivatives	$ 33