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Summary of Norwegian Kroner (NOK) Denominated Borrowings Outstanding (Parenthetical) (Detail)

3 Months Ended

Jun. 30, 2015

Mar. 31, 2015

3.81% January 2014 notes

Debt [Line Items]

Debt instrument interest rate

^[1]

3.81%

3.81%

Debt Instrument Maturity Period

^[1]

January 2014

5.38% May 2012 notes

Debt [Line Items]

Debt instrument interest rate

^[1]

5.38%

5.38%

Debt Instrument Maturity Period

^[1]

May 2012

Variable rate borrowings, June 2013 borrowing agreement

Debt [Line Items]

Debt instrument interest rate

^[2]

Variable rate

Debt Instrument Maturity Period

^[2]

June 2013

Variable rate borrowings, May 2012 borrowing agreement

Debt [Line Items]

Debt instrument interest rate

^[2]

Variable rate

Debt Instrument Maturity Period

^[2]

May 2012

[1]	Notes require semi-annual principal payments.
[2]	Fair values approximate carrying values because the borrowings bear interest at variable rates.

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.5-02.22(a)(1))



-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.5-02.22(a)(1))



-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

No definition available.

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- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.5-02.22(a)(2))



-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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