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Income Taxes (Details) (USD $)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
| Income Tax Disclosure [Abstract] | ||||
| Income before provision for income taxes | $ 6,865,196 | $ 6,660,200 | $ 10,791,971 | $ 11,414,808 |
| Income tax expense | $ (2,620,979) | $ (2,537,583) | $ (4,117,795) | $ (4,315,559) |
| Effective tax rate | 38.20% | 38.10% | 38.20% | 37.80% |