Derivative Instruments and Hedging Activities - Location and Fair Value Amounts of Derivative Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other	$ 786	$ 1,206
Other Non-Current Assets	44,479	11,754
Accrued Liabilities and Other	(3,089)	(16,473)
Current Portion of Derivative Liabilities	(71,956)	(115,813)
Derivative Liabilities	(62,288)	(415,041)
Derivatives not designated as a cash flow hedge
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other	29	875
Other Non-Current Assets	0	0
Accrued Liabilities and Other	(108)	(667)
Current Portion of Derivative Liabilities	0	0
Derivative Liabilities	0	0
Derivatives not designated as a cash flow hedge \| Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other	537	119
Other Non-Current Assets	0	0
Accrued Liabilities and Other	0	0
Current Portion of Derivative Liabilities	0	(2,601)
Derivative Liabilities	0	(511)
Derivatives not designated as a cash flow hedge \| Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other	220	212
Other Non-Current Assets	3,069	9,839
Accrued Liabilities and Other	(2,256)	(11,979)
Current Portion of Derivative Liabilities	(28,978)	(59,055)
Derivative Liabilities	(54,039)	(233,901)
Derivatives not designated as a cash flow hedge \| Cross Currency Swap Agreements
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other	0	0
Other Non-Current Assets	8,688	0
Accrued Liabilities and Other	(700)	(3,464)
Current Portion of Derivative Liabilities	(41,612)	(53,124)
Derivative Liabilities	(7,644)	(180,577)
Derivatives not designated as a cash flow hedge \| Stock Purchase Warrants
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other	0	0
Other Non-Current Assets	32,135	575
Accrued Liabilities and Other	0	0
Current Portion of Derivative Liabilities	0	0
Derivative Liabilities	0	0
Derivative \| Derivatives designated as a cash flow hedge \| Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Prepaid Expenses and Other	0	0
Other Non-Current Assets	587	1,340
Accrued Liabilities and Other	(25)	(363)
Current Portion of Derivative Liabilities	(1,366)	(1,033)
Derivative Liabilities	$ (605)	$ (52)

Derivative instruments and hedges accrued liabilities.

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- Definition

Derivative instruments and hedges Prepaids and other.

+ References

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- Definition

Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

+ 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 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Carrying amount as of the balance sheet date of the assets arising from derivative contracts and hedging activities, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer.

+ 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 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611

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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.

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