LINES OF CREDIT AND LONG-TERM DEBT - Outstanding Lines of Credit and Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total debt outstanding	$ 1,045,714	$ 984,787
Less current portion	(40,822)	(52,712)
Total debt outstanding, less current portion	1,004,892	932,075
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Total debt outstanding	71,168	109,351
Other [Member]
Debt Instrument [Line Items]
Total debt outstanding	7,251	4,062
Debt Discount [Member]
Debt Instrument [Line Items]
Total debt outstanding	(11,095)	(13,202)
Senior Secured Notes Due 2021 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Total debt outstanding	350,000	350,000
Term Loan Facility Due 2020 [Member] \| Term Notes [Member]
Debt Instrument [Line Items]
Total debt outstanding	327,172	350,000
WMLP Term Debt Due 2018 [Member] \| Term Notes [Member]
Debt Instrument [Line Items]
Total debt outstanding	299,248	175,000
Revolving Credit Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Total debt outstanding	$ 1,970	$ 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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+ 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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