|
Property and Equipment, Net (Details Textual) (USD $)
|
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2012
|
|
| Property and Equipment, Net (Textual) [Abstract] | ||
| Depreciation and amortization expense of property and equipment | $ 1,100,000 | $ 907,000 |