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Fair Value of Financial Instruments - Summary Showing Sensitivity Analysis by Using Basis Point Variations (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 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 $ (54)
- 100 basis points [Member]  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Estimated Increase (Decrease) In Fair Value of Financial Instruments $ 54