Fair Value of Financial Instruments - Summary Showing Sensitivity Analysis by Using Basis Point Variations (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
+100 basis points [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated Increase (Decrease) In Fair Value of Financial Instruments	$ (49)
- 100 basis points [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated Increase (Decrease) In Fair Value of Financial Instruments	$ 49

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.

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