Fair Value Measurements - Additional Information (Detail)	12 Months Ended
Dec. 31, 2015
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimated costs	6.00%

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.

No definition available.

Name:	us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration