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Income Taxes (Details Textual) (USD $)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2012
|
Jun. 30, 2011
|
Jun. 30, 2012
|
Jun. 30, 2011
|
|
| Income Taxes (Textual) [Abstract] | ||||
| Income tax expense | $ 301,000 | $ 3,000 | $ 700,000 | $ 6,000 |
| Effective tax rate | 20.00% | 0.50% | 23.00% | 0.10% |
| Tax benefit by research and development | 716,000 | 412,000 | 716,000 | 412,000 |
| Valuation allowance to reduce deferred tax asset | $ 0 | $ 0 | ||