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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section H

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DEBT AND LINES OF CREDIT - Outstanding Lines of Credit and Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Jan. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 1,174,650		$ 1,056,809
Less debt discount and debt issuance costs	(45,601)		(36,914)
Less current installments	77,375		40,822
Total debt outstanding, less current installments	1,051,674		979,073
Capital lease obligations
Debt Instrument [Line Items]
Total debt	65,439		71,168
Other
Debt Instrument [Line Items]
Total debt	6,647		7,251
Senior secured notes due 2022 \| Senior Notes
Debt Instrument [Line Items]
Total debt	$ 350,000		350,000
Stated interest rate (percent)	8.75%
Term loan facility due 2020 \| Term Notes
Debt Instrument [Line Items]
Total debt	$ 326,349		327,172
San Juan Loan \| Term Notes
Debt Instrument [Line Items]
Total debt	$ 125,000	$ 125,000	0
Stated interest rate (percent)	7.25%
WMLP term loan facility due 2018 \| Term Notes
Debt Instrument [Line Items]
Total debt	$ 301,215		299,248
Revolving line of credit \| Revolving line of credit
Debt Instrument [Line Items]
Total debt	$ 0		$ 1,970