|
Employee Benefit Plan - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Schedule Of Sale Of Subsidiary [Abstract] | |||
| Defined contribution plan employer matching contribution percent for three percent of employee contribution | 100.00% | ||
| Initial employee salary percentage with full employer contribution | 3.00% | ||
| Defined contribution plan employer matching contribution percent for two percent of employee contribution | 50.00% | ||
| Additional employee salary percentage with partly employer contribution | 2.00% | ||
| Company's contributions to Plan | $ 0.7 | $ 0.6 | $ 0.6 |