Contractual interest rate for funds borrowed, under the debt agreement.

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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ 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(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Date the credit facility terminates, in CCYY-MM-DD format.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Long-Term Debt - Summary of Debt (Parenthetical) (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Series C Revolving Credit Facility Due 2017 [Member]
Debt Instrument [Line Items]
Credit facility, due date		Nov. 16, 2017
Series A, B Revolving Credit Facilities Due 2019 [Member]
Debt Instrument [Line Items]
Credit facility, due date		Mar. 31, 2019
6.375% Senior Secured Notes Due 2019 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	6.375%	6.375%	6.375%
Debt instrument maturity date	Dec. 01, 2019	Dec. 01, 2019	Dec. 01, 2019
8.75% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate	8.875%	8.75%	8.75%
Debt instrument maturity date	Dec. 01, 2020	Dec. 01, 2020	Dec. 01, 2020
8.875% Senior Secured Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		8.875%
Debt instrument maturity date		Dec. 01, 2022
Revolving Credit Facility Due 2017 [Member]
Debt Instrument [Line Items]
Credit facility, due date			Nov. 16, 2017