Consolidated Statement of Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($)
|
Total |
Common Stock |
Additional Paid-In Capital |
Treasury Stock |
Retained Earnings |
| Balance at beginning of period (in shares) at Dec. 31, 2015 |
|
29,765,525
|
|
|
|
| Balance at beginning of period at Dec. 31, 2015 |
$ 395,249,574
|
$ 2,979
|
$ 319,002,254
|
$ (784,829)
|
$ 77,029,170
|
| Treasury stock at beginning of period (in shares) at Dec. 31, 2015 |
(37,937)
|
|
|
(37,937)
|
|
| Increase (decrease) in stockholders' equity: |
|
|
|
|
|
| Share compensation expense |
$ 9,109,921
|
|
9,109,921
|
|
|
| Exercise of stock options (in shares) |
|
4,550
|
|
|
|
| Exercise of stock options |
53,158
|
|
53,158
|
|
|
| Common stock issued for vested restricted stock (in shares) |
|
611,562
|
|
|
|
| Common stock issued for vested restricted stock |
0
|
$ 61
|
(61)
|
|
|
| Common stock issued for vested performance shares (in shares) |
|
37,547
|
|
|
|
| Common stock issued for vested performance shares |
0
|
$ 4
|
(4)
|
|
|
| Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards (in shares) |
|
(200,531)
|
|
|
|
| Common shares withheld and retired to satisfy employee tax withholding obligations upon vesting of share-based awards |
(4,627,486)
|
$ (20)
|
(4,627,466)
|
|
|
| Tax deficiency from exercise of stock options |
(1,164,520)
|
|
(1,164,520)
|
|
|
| Purchases of treasury stock (in shares) |
|
|
|
(1,528,719)
|
|
| Purchases of treasury stock |
(32,314,708)
|
|
|
$ (32,314,708)
|
|
| Net income |
2,193,380
|
|
|
|
2,193,380
|
| Balance at end of period (in shares) at Jun. 30, 2016 |
|
30,218,653
|
|
|
|
| Balance at end of period at Jun. 30, 2016 |
$ 368,499,319
|
$ 3,024
|
$ 322,373,282
|
$ (33,099,537)
|
$ 79,222,550
|
| Treasury stock at end of period (in shares) at Jun. 30, 2016 |
(1,566,656)
|
|
|
(1,566,656)
|
|