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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 13,918 | $ 189,077 | $ 151,963 | $ (1,671) | $ 353,287
Net income |  |  | 10,550 |  | 10,550
Other comprehensive income (loss), net of tax |  |  |  | (3,202) | (3,202)
Impact of adoption of ASU 2016-01 | ASU 2016-01 |  |  | 667 | (667) |
Common cash dividends declared |  |  | (834) |  | (834)
Issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan | 3 | 100 |  |  | 103
Issuance of shares of common stock as a result of stock options exercised | 13 | 193 |  |  | 206
Stock-based compensation expense |  | 496 |  |  | 496
Restricted stock awards - shares of common stock | 7 | (7) |  |  |
Exchange of shares of common stock in connection with payroll taxes for restricted stock and in connection with stock options exercised | (4) | (174) |  |  | (178)
Balance at Mar. 31, 2018 | 13,937 | 189,685 | 162,346 | (5,540) | 360,428
Balance at Dec. 31, 2017 | 13,918 | 189,077 | 151,963 | (1,671) | 353,287
Net income |  |  |  |  | 20,995
Other comprehensive income (loss), net of tax |  |  |  |  | (4,536)
Balance at Jun. 30, 2018 | 13,974 | 190,533 | 171,955 | (6,874) | 369,588
Balance at Mar. 31, 2018 | 13,937 | 189,685 | 162,346 | (5,540) | 360,428
Net income |  |  | 10,445 |  | 10,445
Other comprehensive income (loss), net of tax |  |  |  | (1,334) | (1,334)
Common cash dividends declared |  |  | (836) |  | (836)
Issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan | 6 | 215 |  |  | 221
Issuance of shares of common stock as a result of stock options exercised | 26 | 362 |  |  | 388
Stock-based compensation expense |  | 292 |  |  | 292
Restricted stock awards - shares of common stock | 4 | (4) |  |  |
Exchange of shares of common stock in connection with payroll taxes for restricted stock and in connection with stock options exercised | 1 | (17) |  |  | (16)
Balance at Jun. 30, 2018 | 13,974 | 190,533 | 171,955 | (6,874) | 369,588
Balance at Dec. 31, 2018 | 15,718 | 270,761 | 192,203 | (5,544) | 473,138
Net income |  |  | 12,918 |  | 12,918
Other comprehensive income (loss), net of tax |  |  |  | 2,344 | 2,344
Common cash dividends declared |  |  | (942) |  | (942)
Issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan | 4 | 124 |  |  | 128
Issuance of shares of common stock as a result of stock options exercised | 25 | 263 |  |  | 288
Stock-based compensation expense |  | 722 |  |  | 722
Restricted stock awards - shares of common stock | 13 | (50) |  |  | (37)
Exchange of shares of common stock in connection with payroll taxes for restricted stock and in connection with stock options exercised | (5) | (147) |  |  | (152)
Balance at Mar. 31, 2019 | 15,755 | 271,673 | 204,179 | (3,200) | 488,407
Balance at Dec. 31, 2018 | 15,718 | 270,761 | 192,203 | (5,544) | 473,138
Net income |  |  |  |  | 26,422
Other comprehensive income (loss), net of tax |  |  |  |  | 4,586
Balance at Jun. 30, 2019 | 15,773 | 272,744 | 216,741 | (958) | 504,300
Balance at Mar. 31, 2019 | 15,755 | 271,673 | 204,179 | (3,200) | 488,407
Net income |  |  | 13,504 |  | 13,504
Other comprehensive income (loss), net of tax |  |  |  | 2,242 | 2,242
Common cash dividends declared |  |  | (942) |  | (942)
Issuance of shares of common stock as a result of stock purchased under the Employee Stock Purchase Plan | 11 | 323 |  |  | 334
Issuance of shares of common stock as a result of stock options exercised | 3 | 41 |  |  | 44
Stock-based compensation expense |  | 719 |  |  | 719
Restricted stock awards - shares of common stock | 5 | (5) |  |  |
Exchange of shares of common stock in connection with payroll taxes for restricted stock and in connection with stock options exercised | (1) | (7) |  |  | (8)
Balance at Jun. 30, 2019 | $ 15,773 | $ 272,744 | $ 216,741 | $ (958) | $ 504,300

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