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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands | Total | Common Stock | Treasury Stock | Additional Paid-in Capital | Retained Earnings
--- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2016 | $ 142,442 | $ 39 | $ (539) | $ 132,879 | $ 10,063
Beginning balance, shares at Dec. 31, 2016 |  | 38,816,474 | 67,594 |  |
Vesting of restricted stock, shares |  | 90,017 |  |  |
Stock-based compensation | 1,378 |  |  | 1,378 |
Employee stock purchase plan compensation | 19 |  |  | 19 |
Proceeds from equity issuance, net of transaction costs | 24,169 | $ 1 |  | 24,168 |
Proceeds from equity issuance, net of transaction costs, shares |  | 1,500,000 |  |  |
Restricted stock buy back | (127) |  | $ (127) |  |
Restricted stock buy back, shares |  | (13,458) | 13,458 |  |
Net income | 10,648 |  |  |  | 10,648
Ending balance at Jun. 30, 2017 | 178,529 | $ 40 | $ (666) | 158,444 | 20,711
Ending balance, shares at Jun. 30, 2017 |  | 40,393,033 | 81,052 |  |
Beginning balance at Dec. 31, 2016 | 142,442 | $ 39 | $ (539) | 132,879 | 10,063
Beginning balance, shares at Dec. 31, 2016 |  | 38,816,474 | 67,594 |  |
Net income | 10,648 |  |  |  |
Ending balance at Sep. 30, 2017 | 178,529 |  |  |  |
Beginning balance at Jun. 30, 2017 | 178,529 | $ 40 | $ (666) | $ 158,444 | $ 20,711
Beginning balance, shares at Jun. 30, 2017 |  | 40,393,033 | 81,052 |  |
Net income | 7,047 |  |  |  |
Ending balance at Sep. 30, 2017 | $ 178,529 |  |  |  |

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