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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands | Total | Cumulative Effect, Period of Adoption, Adjustment [Member] | Common Stock [Member] | Additional Paid In Capital [Member] | Retained Earnings [Member] | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
BALANCE at Dec. 31, 2018 | $ 182,498 |  | $ 327 | $ 181,815 | $ 105,212 |  |  | $ (431)
BALANCE, Shares at Dec. 31, 2018 |  |  | 32,723,972 |  |  |  |  |
BALANCE, Treasury Stock, Value at Dec. 31, 2018 |  |  |  |  |  |  | $ (104,425) |
BALANCE, Treasury Stock, Shares at Dec. 31, 2018 |  |  |  |  |  |  | (2,808,361) |
Net income | 27,753 |  |  |  | 27,753 |  |  |
Issuance of common stock awards to employees, value |  |  | $ 2 | (2) |  |  |  |
Issuance of common stock awards to employees, shares |  |  | 139,862 |  |  |  |  |
Surrender of common stock awards, value | (2,323) |  |  |  |  |  | $ (2,323) |
Surrender of common stock awards, shares |  |  |  |  |  |  | (46,135) |
Share-based compensation expense | 4,211 |  |  | 4,211 |  |  |  |
Share-based compensation issued to directors, value | 158 |  |  | 158 |  |  |  |
Share-based compensation issued to directors, shares |  |  | 7,670 |  |  |  |  |
Other comprehensive income (loss), net of tax | (6,295) |  |  |  |  |  |  | (6,295)
BALANCE at Jun. 30, 2019 | 206,002 |  | $ 329 | 186,182 | 132,965 |  |  | (6,726)
BALANCE, Shares at Jun. 30, 2019 |  |  | 32,871,504 |  |  |  |  |
BALANCE, Treasury Stock, Value at Jun. 30, 2019 |  |  |  |  |  |  | $ (106,748) |
BALANCE, Treasury Stock, Shares at Jun. 30, 2019 |  |  |  |  |  |  | (2,854,496) |
BALANCE at Mar. 31, 2019 | 190,601 |  | $ 328 | 183,836 | 114,046 |  |  | (3,180)
BALANCE, Shares at Mar. 31, 2019 |  |  | 32,780,967 |  |  |  |  |
BALANCE, Treasury Stock, Value at Mar. 31, 2019 |  |  |  |  |  |  | $ (104,429) |
BALANCE, Treasury Stock, Shares at Mar. 31, 2019 |  |  |  |  |  |  | (2,809,004) |
Net income | 18,919 |  |  |  | 18,919 |  |  |
Issuance of common stock awards to employees, value |  |  | $ 1 | (1) |  |  |  |
Issuance of common stock awards to employees, shares |  |  | 82,867 |  |  |  |  |
Surrender of common stock awards, value | (2,319) |  |  |  |  |  | $ (2,319) |
Surrender of common stock awards, shares |  |  |  |  |  |  | (45,492) |
Share-based compensation expense | 2,263 |  |  | 2,263 |  |  |  |
Share-based compensation issued to directors, value | 84 |  |  | 84 |  |  |  |
Share-based compensation issued to directors, shares |  |  | 7,670 |  |  |  |  |
Other comprehensive income (loss), net of tax | (3,546) |  |  |  |  |  |  | (3,546)
BALANCE at Jun. 30, 2019 | 206,002 |  | $ 329 | 186,182 | 132,965 |  |  | (6,726)
BALANCE, Shares at Jun. 30, 2019 |  |  | 32,871,504 |  |  |  |  |
BALANCE, Treasury Stock, Value at Jun. 30, 2019 |  |  |  |  |  |  | $ (106,748) |
BALANCE, Treasury Stock, Shares at Jun. 30, 2019 |  |  |  |  |  |  | (2,854,496) |
BALANCE at Dec. 31, 2019 | $ 250,031 | $ (1,190) | $ 329 | 190,230 | 173,371 | $ (1,190) |  | (7,143)
BALANCE, Shares at Dec. 31, 2019 | 32,871,504 |  | 32,871,504 |  |  |  |  |
BALANCE, Treasury Stock, Value at Dec. 31, 2019 | $ (106,756) |  |  |  |  |  | $ (106,756) |
BALANCE, Treasury Stock, Shares at Dec. 31, 2019 | (2,855,164) |  |  |  |  |  | (2,855,164) |
Surrender of common stock awards, shares |  |  |  |  |  |  | (27,343) |
BALANCE at Mar. 31, 2020 | $ 245,797 |  | $ 330 | 192,564 | 188,169 |  |  | (12,751)
BALANCE, Shares at Mar. 31, 2020 |  |  | 32,961,777 |  |  |  |  |
BALANCE, Treasury Stock, Value at Mar. 31, 2020 |  |  |  |  |  |  | $ (122,515) |
BALANCE, Treasury Stock, Shares at Mar. 31, 2020 |  |  |  |  |  |  | (3,299,465) |
BALANCE at Dec. 31, 2019 | $ 250,031 | $ (1,190) | $ 329 | 190,230 | 173,371 | $ (1,190) |  | (7,143)
BALANCE, Shares at Dec. 31, 2019 | 32,871,504 |  | 32,871,504 |  |  |  |  |
BALANCE, Treasury Stock, Value at Dec. 31, 2019 | $ (106,756) |  |  |  |  |  | $ (106,756) |
BALANCE, Treasury Stock, Shares at Dec. 31, 2019 | (2,855,164) |  |  |  |  |  | (2,855,164) |
Net income | $ 41,325 |  |  |  | 41,325 |  |  |
Issuance of common stock awards to employees, value |  |  | $ 2 | (2) |  |  |  |
Issuance of common stock awards to employees, shares |  |  | 246,362 |  |  |  |  |
Surrender of common stock awards, value | (973) |  |  |  |  |  | $ (973) |
Share-based compensation expense | 4,935 |  |  | 4,935 |  |  |  |
Share-based compensation issued to directors, value | 125 |  |  | 125 |  |  |  |
Share-based compensation issued to directors, shares |  |  | 6,371 |  |  |  |  |
Common stock repurchase, value | (15,759) |  |  |  |  |  | $ (15,759) |
Common stock repurchase, shares |  |  |  |  |  |  | (442,542) |
Other comprehensive income (loss), net of tax | (5,758) |  |  |  |  |  |  | (5,758)
BALANCE at Jun. 30, 2020 | $ 272,736 |  | $ 331 | 195,288 | 213,506 |  |  | (12,901)
BALANCE, Shares at Jun. 30, 2020 | 33,124,237 |  | 33,124,237 |  |  |  |  |
BALANCE, Treasury Stock, Value at Jun. 30, 2020 | $ (123,488) |  |  |  |  |  | $ (123,488) |
BALANCE, Treasury Stock, Shares at Jun. 30, 2020 | (3,325,049) |  |  |  |  |  | (3,325,049) |
BALANCE at Mar. 31, 2020 | $ 245,797 |  | $ 330 | 192,564 | 188,169 |  |  | (12,751)
BALANCE, Shares at Mar. 31, 2020 |  |  | 32,961,777 |  |  |  |  |
BALANCE, Treasury Stock, Value at Mar. 31, 2020 |  |  |  |  |  |  | $ (122,515) |
BALANCE, Treasury Stock, Shares at Mar. 31, 2020 |  |  |  |  |  |  | (3,299,465) |
Net income | 25,337 |  |  |  | 25,337 |  |  |
Issuance of common stock awards to employees, value |  |  | $ 1 | (1) |  |  |  |
Issuance of common stock awards to employees, shares |  |  | 156,405 |  |  |  |  |
Surrender of common stock awards, value | (973) |  |  |  |  |  | $ (973) |
Surrender of common stock awards, shares |  |  |  |  |  |  | (25,584) |
Share-based compensation expense | 2,633 |  |  | 2,633 |  |  |  |
Share-based compensation issued to directors, value | $ 92 |  |  | 92 |  |  |  |
Share-based compensation issued to directors, shares | 6,055 |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax | $ (150) |  |  |  |  |  |  | (150)
BALANCE at Jun. 30, 2020 | $ 272,736 |  | $ 331 | $ 195,288 | $ 213,506 |  |  | $ (12,901)
BALANCE, Shares at Jun. 30, 2020 | 33,124,237 |  | 33,124,237 |  |  |  |  |
BALANCE, Treasury Stock, Value at Jun. 30, 2020 | $ (123,488) |  |  |  |  |  | $ (123,488) |
BALANCE, Treasury Stock, Shares at Jun. 30, 2020 | (3,325,049) |  |  |  |  |  | (3,325,049) |

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