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Derivative Instruments and Hedging Activities - Effect of Gain (Loss) on Derivatives Not Designated as Hedging Instruments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Realized (losses) gains relating to: |  |  |  |
Derivative instruments not designated as hedging instruments realized (loss) gain net | $ (24,619) | $ (31,437) | $ (60,935) | $ (64,754)
Unrealized gains (losses) relating to: |  |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | (64,653) | 95,189 | (135,958) | 45,120
Total realized and unrealized gains (losses) on derivative instruments | (89,272) | 63,752 | (196,893) | (19,634)
Interest rate swap agreements [Member] |  |  |  |
Realized (losses) gains relating to: |  |  |  |
Derivative instruments not designated as hedging instruments realized (loss) gain net | (22,409) | (27,205) | (45,589) | (55,094)
Unrealized gains (losses) relating to: |  |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | (62,817) | 83,986 | (143,871) | 40,326
Interest Rate Swaps Terminated [Member] |  |  |  |
Realized (losses) gains relating to: |  |  |  |
Derivative instruments not designated as hedging instruments realized (loss) gain net | 0 | 0 | (8,140) | 0
Foreign currency forward contracts [Member] |  |  |  |
Realized (losses) gains relating to: |  |  |  |
Derivative instruments not designated as hedging instruments realized (loss) gain net | (2,336) | (4,232) | (7,332) | (9,660)
Unrealized gains (losses) relating to: |  |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | 1,093 | 9,386 | 15,064 | 3,057
Warrant [Member] |  |  |  |
Unrealized gains (losses) relating to: |  |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | (4,274) | 1,817 | (8,496) | 1,737
Time charter swap agreement [Member] |  |  |  |
Realized (losses) gains relating to: |  |  |  |
Derivative instruments not designated as hedging instruments realized (loss) gain net | 126 | 0 | 126 | 0
Unrealized gains (losses) relating to: |  |  |  |
Derivative instruments not designated as hedging instruments unrealized gain (loss) net | $ 1,345 | $ 0 | $ 1,345 | $ 0

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- Definition Derivative instruments not designated as hedging instruments realized gain loss net. + References No definition available. + Details
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- Definition Derivative instruments not designated as hedging instruments unrealized gain loss net. + References No definition available. + Details
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- Definition Realized losses gains. + References No definition available. + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as 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 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 + Details
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