LINES OF CREDIT AND DEBT - Outstanding Lines of Credit and Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt outstanding	$ 1,052,954	$ 984,787
Less current portion	(38,879)	(52,712)
Total debt outstanding, less current installments	1,014,075	932,075
Capital lease obligations
Debt Instrument [Line Items]
Total debt outstanding	81,077	109,351
Other
Debt Instrument [Line Items]
Total debt outstanding	7,988	4,062
Debt discount
Debt Instrument [Line Items]
Total debt outstanding	(11,519)	(13,202)
Senior secured notes due 2022 \| Senior Notes
Debt Instrument [Line Items]
Total debt outstanding	$ 350,000	350,000
Stated interest rate (percent)	8.75%
Term loan facility due 2020 \| Term Notes
Debt Instrument [Line Items]
Total debt outstanding	$ 327,994	350,000
WMLP term loan facility due 2018 \| Term Notes
Debt Instrument [Line Items]
Total debt outstanding	297,414	175,000
Revolving line of credit \| Revolving line of credit
Debt Instrument [Line Items]
Total debt outstanding	$ 0	$ 9,576

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13,16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Amount of long-term debt and capital lease obligation due after one 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 210.5-02.22)

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

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