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v3.8.0.1

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Shares Purchased to Fund Options Exercised [Member] Treasury Stock [Member] | Shares Purchased to Fund Options Exercised [Member] | Restricted Stock Awards Repurchased to Satisfy Tax Obligations [Member] Treasury Stock [Member] | Restricted Stock Awards Repurchased to Satisfy Tax Obligations [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2014 |  |  |  |  | $ 315 | $ 206,437 | $ (37,221) | $ 289,623 | $ (2,907) | $ 456,247
Net income |  |  |  |  |  |  |  | 46,209 |  | 46,209
Award of common shares released from Employee Benefit Trust |  |  |  |  |  | 2,092 |  |  |  | 2,092
Vesting of restricted stock unit awards |  |  |  |  |  | (3,076) | 3,580 | (504) |  |
Exercise of stock options |  |  |  |  |  | (51) | 378 | (182) |  | 145
Stock-based compensation expense |  |  |  |  |  | 4,676 |  |  |  | 4,676
Stock-based income tax benefit |  |  |  |  |  | 574 |  |  |  | 574
Purchase of treasury shares | $ (14,351) | $ (14,351) | $ (1,254) | $ (1,254) |  |  |  |  |  |
Purchase of treasury shares | (14,351) | (14,351) | (1,254) | (1,254) |  |  |  |  |  |
Dividends on common stock |  |  |  |  |  |  |  | (18,616) |  | (18,616)
Other comprehensive loss |  |  |  |  |  |  |  |  | (2,655) | (2,655)
Balance at Dec. 31, 2015 |  |  |  |  | 315 | 210,652 | (48,868) | 316,530 | (5,562) | 473,067
Net income |  |  |  |  |  |  |  | 64,916 |  | 64,916
Award of common shares released from Employee Benefit Trust |  |  |  |  |  | 2,057 |  |  |  | 2,057
Vesting of restricted stock unit awards |  |  |  |  |  | (4,049) | 4,446 | (397) |  |
Exercise of stock options |  |  |  |  |  | (30) | 526 | (168) |  | 328
Stock-based compensation expense |  |  |  |  |  | 5,120 |  |  |  | 5,120
Stock-based income tax benefit |  |  |  |  |  | 712 |  |  |  | 712
Purchase of treasury shares | (8,031) | (8,031) | (1,827) | (1,827) |  |  |  |  |  |
Purchase of treasury shares | (8,031) | (8,031) | (1,827) | (1,827) |  |  |  |  |  |
Dividends on common stock |  |  |  |  |  |  |  | (19,689) |  | (19,689)
Other comprehensive loss |  |  |  |  |  |  |  |  | (2,800) | (2,800)
Balance at Dec. 31, 2016 |  |  |  |  | 315 | 214,462 | (53,754) | 361,192 | (8,362) | 513,853
Net income |  |  |  |  |  |  |  | 41,121 |  | 41,121
Award of common shares released from Employee Benefit Trust |  |  |  |  |  | 2,512 |  |  |  | 2,512
Vesting of restricted stock unit awards |  |  |  |  |  | (5,052) | 5,323 | (271) |  |
Exercise of stock options |  |  |  |  |  | (6) | 46 | (40) |  |
Stock-based compensation expense |  |  |  |  |  | 5,990 |  |  |  | 5,990
Purchase of treasury shares | (6,666) | (6,666) | (2,624) | (2,624) |  |  |  |  |  |
Purchase of treasury shares | $ (6,666) | $ (6,666) | $ (2,624) | $ (2,624) |  |  |  |  |  |
Dividends on common stock |  |  |  |  |  |  |  | (20,954) |  | (20,954)
Other comprehensive loss |  |  |  |  |  |  |  |  | (624) | (624)
Balance at Dec. 31, 2017 |  |  |  |  | $ 315 | $ 217,906 | $ (57,675) | $ 381,048 | $ (8,986) | $ 532,608

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