Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(b),(c)(1)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

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- Details

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- Details

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Risk Management and Use of Derivative Financial Instruments (Details 6) - Designated as Hedging Instrument - Foreign currency forward contracts and collars $ in Thousands	Mar. 31, 2016 EUR (€) instrument	Mar. 31, 2016 NOK instrument	Mar. 31, 2016 USD ($) instrument
Derivative
Fair value			$ 4,836
Derivatives in Cash Flow Hedging Relationships \| Euro
Derivative
Number of Instruments \| instrument	73	73	73
Notional Amount \| €	€ 31,272,000
Fair value			$ 2,875
Derivatives in Cash Flow Hedging Relationships \| NOK
Derivative
Number of Instruments \| instrument	53	53	53
Notional Amount \| NOK		NOK 103,064,000
Fair value			$ 1,735
Net Investment Hedging \| NOK
Derivative
Number of Instruments \| instrument	8	8	8
Notional Amount \| NOK		NOK 31,077,000
Fair value			$ 226