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Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 | $ 11,761,083 | $ 123,282,851 | $ 92,965,645 | $ (2,123,829) | $ 225,885,750
Net income |  |  | 6,373,489 |  | 6,373,489
Other comprehensive income, net of tax |  |  |  | 2,525,411 | 2,525,411
Common cash dividends declared |  |  | (470,873) |  | (470,873)
Proceeds from issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan | 5,054 | 94,560 |  |  | 99,614
Proceeds from issuance of common stock, stock options exercised | 46,020 | 729,473 |  |  | 775,493
Stock compensation expense |  | 382,761 |  |  | 382,761
Restricted stock awards - common stock | 22,382 | (22,382) |  |  |
Exchange of common stock in connection with stock options exercised and restricted stock vested | (19,628) | (431,806) |  |  | (451,434)
Balance at Mar. 31, 2016 | 11,814,911 | 124,057,965 | 98,868,261 | 401,582 | 235,142,719
Tax benefit of nonqualified stock options exercised |  | 22,508 |  |  | 22,508
Balance at Dec. 31, 2016 | 13,106,845 | 156,776,642 | 118,616,901 | (2,459,589) | 286,040,799
Net income |  |  | 9,184,965 |  | 9,184,965
Other comprehensive income, net of tax |  |  |  | 410,739 | 410,739
Common cash dividends declared |  |  | (656,574) |  | (656,574)
Proceeds from issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan | 3,573 | 83,091 |  |  | 86,664
Proceeds from issuance of common stock, stock options exercised | 44,284 | 630,290 |  |  | 674,574
Stock compensation expense |  | 388,753 |  |  | 388,753
Restricted stock awards - common stock | 13,289 | (13,289) |  |  |
Exchange of common stock in connection with stock options exercised and restricted stock vested | (6,772) | (283,518) |  |  | (290,290)
Balance at Mar. 31, 2017 | $ 13,161,219 | $ 157,581,969 | $ 127,145,292 | $ (2,048,850) | $ 295,839,630

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