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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Other Comprehensive Income [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 192,951 | $ 1,370 | $ 216,006 | $ 291 | $ (24,716)
Balance, shares at Dec. 31, 2017 |  | 136,996,000 |  |  |
Common stock issued (Note 3) | 137,250 | $ 153 | 137,097 |  |
Common stock issued, shares |  | 15,250,000 |  |  |
Restricted stock issued and vesting of restricted stock units, net |  | $ 7 | (7) |  |
Restricted stock issued and vesting of restricted stock units net, shares |  | 789,000 |  |  |
Shares repurchased | (1,430) | $ (1) | (1,429) |  |
Shares repurchased, shares |  | (135,000) |  |  |
Exercise of stock options, net | 157 | $ 2 | 155 |  |
Exercise of stock options net, shares |  | 183,000 |  |  |
Stock-based compensation | 10,078 |  | 10,078 |  |
Other comprehensive income (loss) | 82 |  |  | 82 |
Dividends | (14,202) |  |  |  | (14,202)
Net income | 48,197 |  |  |  | 48,197
Balance at Sep. 30, 2018 | 373,083 | $ 1,531 | 361,900 | 373 | 9,279
Balance, shares at Sep. 30, 2018 |  | 153,083,000 |  |  |
Balance at Jun. 30, 2018 | 353,323 | $ 1,531 | 359,066 | 461 | (7,735)
Balance, shares at Jun. 30, 2018 |  | 153,142,000 |  |  |
Restricted stock issued and vesting of restricted stock units net, shares |  | (36,000) |  |  |
Shares repurchased | (424) | $ (1) | (423) |  |
Shares repurchased, shares |  | (48,000) |  |  |
Exercise of stock options, net | 18 | $ 1 | 17 |  |
Exercise of stock options net, shares |  | 25,000 |  |  |
Stock-based compensation | 3,240 |  | 3,240 |  |
Other comprehensive income (loss) | (88) |  |  | (88) |
Dividends | (5,035) |  |  |  | (5,035)
Net income | 22,049 |  |  |  | 22,049
Balance at Sep. 30, 2018 | 373,083 | $ 1,531 | 361,900 | 373 | 9,279
Balance, shares at Sep. 30, 2018 |  | 153,083,000 |  |  |
Balance at Dec. 31, 2018 | $ 358,335 | $ 1,532 | 363,655 | 467 | (7,319)
Balance, shares at Dec. 31, 2018 | 153,202,000 | 153,202,000 |  |  |
Restricted stock issued and vesting of restricted stock units, net |  | $ 18 | (18) |  |
Restricted stock issued and vesting of restricted stock units net, shares |  | 1,910,000 |  |  |
Shares repurchased | $ (2,187) | $ (2) | (2,185) |  |
Shares repurchased, shares |  | (338,000) |  |  |
Exercise of stock options, net | 70 |  | 70 |  |
Exercise of stock options net, shares |  | 45,000 |  |  |
Stock-based compensation | 8,581 |  | 8,581 |  |
Other comprehensive income (loss) | (432) |  |  | (432) |
Dividends | (15,286) |  |  |  | (15,286)
Net income | 15,455 |  |  |  | 15,455
Balance at Sep. 30, 2019 | $ 364,536 | $ 1,548 | 370,103 | 35 | (7,150)
Balance, shares at Sep. 30, 2019 | 154,819,000 | 154,819,000 |  |  |
Balance at Jun. 30, 2019 | $ 363,819 | $ 1,551 | 367,750 | 725 | (6,207)
Balance, shares at Jun. 30, 2019 |  | 155,108,000 |  |  |
Restricted stock issued and vesting of restricted stock units, net |  | $ (3) | 3 |  |
Restricted stock issued and vesting of restricted stock units net, shares |  | (301,000) |  |  |
Shares repurchased | (80) |  | (80) |  |
Shares repurchased, shares |  | (13,000) |  |  |
Exercise of stock options, net | 56 |  | 56 |  |
Exercise of stock options net, shares |  | 25,000 |  |  |
Stock-based compensation | 2,374 |  | 2,374 |  |
Other comprehensive income (loss) | (690) |  |  | (690) |
Dividends | (5,095) |  |  |  | (5,095)
Net income | 4,152 |  |  |  | 4,152
Balance at Sep. 30, 2019 | $ 364,536 | $ 1,548 | $ 370,103 | $ 35 | $ (7,150)
Balance, shares at Sep. 30, 2019 | 154,819,000 | 154,819,000 |  |  |

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