Fair Value of Financial Instruments - Summary Showing Sensitivity Analysis by Using Basis Point Variations (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($)
+100 basis points [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated Increase (Decrease) In Fair Value of Financial Instruments	$ (122)
- 100 basis points [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated Increase (Decrease) In Fair Value of Financial Instruments	$ 122

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