|
Property and Equipment - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Property And Equipment Textual [Abstract] | |||
| Depreciation expense related to plant and equipment | $ 814 | $ 837 | $ 875 |
| Amount disposed of property plant and equipment | 345 | 251 | |
| Gain or loss on disposal of property plant and equipment | $ (9) | $ 0 | $ (11) |