|
Property and Equipment - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Sep. 30, 2014
|
Sep. 30, 2013
|
|
| Property, Plant and Equipment [Abstract] | ||||
| Depreciation expense | $ 34 | $ 58 | $ 112 | $ 201 |