Debt - Summary of Redemption Price in Percentage (Detail)	3 Months Ended
Mar. 31, 2016
May 1, 2016 through October 31, 2016 [Member]
Debt Instrument, Redemption [Line Items]
Redemption price	101.00%
November 1, 2016 and Thereafter [Member]
Debt Instrument, Redemption [Line Items]
Redemption price	100.00%

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration