Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Compensation and Retirement Disclosure [Abstract] | ||
| Employer contributions | $ 0.7 | $ 0.6 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The increase in the fair value of plan assets from contributions made by the employer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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