|
Consolidated Statement of Stockholders' Equity (USD $)
|
Total
|
Common Stock [Member]
|
Additional Paid-in Capital [Member]
|
Retained Earnings [Member]
|
| Stockholders' equity at beginning of period at Dec. 31, 2013 |
$ 159,230,031 |
$ 2,291 |
$ 106,831,802 |
$ 52,395,938 |
| Common stock, shares at beginning of period at Dec. 31, 2013 |
22,900,471 |
22,900,471 |
|
|
| Increase (decrease) in stockholders' equity: |
|
|
|
|
| Share compensation expense |
3,351,598 |
|
3,351,598 |
|
| Exercise of stock options (in shares) |
|
54,839 |
|
|
| Exercise of stock options |
563,679 |
6 |
563,673 |
|
| Common stock issued for vested restricted stock (in shares) |
|
156,012 |
|
|
| Common stock issued for vested restricted stock |
0 |
16 |
(16) |
|
| Common shares withheld and retired to satisfy employee tax witholding obligations upon vesting of restricted stock (in shares) |
|
(44,493) |
|
|
| Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of restricted stock |
(872,443) |
(4) |
(872,439) |
|
| Tax benefit from exercise of stock options |
297,451 |
|
297,451 |
|
| Net income |
12,131,780 |
|
|
12,131,780 |
| Stockholders' equity at end of period at Sep. 30, 2014 |
$ 174,702,096 |
$ 2,309 |
$ 110,172,069 |
$ 64,527,718 |
| Common stock, shares at end of period at Sep. 30, 2014 |
23,066,829 |
23,066,829 |
|
|