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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Income [Member] | Accumulated Other Comprehensive Income, Net of Tax [Member] | Share Repurchase Plan [Member] | Share Repurchase Plan [Member] Common Stock [Member] | Share Repurchase Plan [Member] Additional Paid-In Capital [Member] | Series A Preferred Stock [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 | $ 160,521 |  | $ 48,966 | $ 110,441 | $ 1,114 |  |  |  |
Beginning Balance, shares at Dec. 31, 2013 |  | 10,939,268 |  |  |  |  |  |  | 110,684
Net income | 34,050 |  |  | 34,050 |  |  |  |  |
Total other comprehensive income, net of income taxes | 2,883 |  |  |  | 2,883 |  |  |  |
Conversion of preferred stock to common stock, shares |  | 107,298 |  |  |  |  |  |  | (107,298)
Issuance of restricted stock | 0 | $ 0 | 0 | 0 | 0 |  |  |  | $ 0
Issuance of restricted stock, shares |  | 98,720 |  |  |  |  |  |  |
Exercise of common stock options, value | $ 125 |  | 125 |  |  |  |  |  |
Exercise of common stock options, shares | 50,000 | 50,000 |  |  |  |  |  |  |
Forfeiture of restricted stock, value | $ 0 | $ 0 | 0 | 0 | 0 |  |  |  | $ 0
Forfeiture of restricted stock, shares |  | (3,330) |  |  |  |  |  |  |
Repurchase and retirement of common stock, value | (597) |  | (597) |  |  | $ (17,810) |  | $ (17,810) |
Repurchase and retirement of common stock, shares |  | (13,541) |  |  |  |  | (488,346) |  |
Redemption of Series A preferred stock | (34) |  | (25) | (9) |  |  |  |  |
Redemption of Series A preferred stock, shares |  |  |  |  |  |  |  |  | (3,386)
Deferred taxes on debt discount | 215 |  | 215 |  |  |  |  |  |
Common stock dividends | (8,901) |  |  | (8,901) |  |  |  |  |
Preferred stock dividends | 4 |  |  | 4 |  |  |  |  |
Tax benefits on stock-based compensation | 1,304 |  | 1,304 |  |  |  |  |  |
Stock-based compensation | 4,333 |  | 4,333 |  |  |  |  |  |
Ending Balance at Jun. 30, 2014 | 176,093 |  | 36,511 | 135,585 | 3,997 |  |  |  |
Ending Balance, shares at Jun. 30, 2014 |  | 10,690,069 |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2014 | 182,585 |  | 20,465 | 161,454 | 666 |  |  |  |
Beginning Balance, shares at Dec. 31, 2014 |  | 10,189,128 |  |  |  |  |  |  |
Net income | 47,400 |  |  | 47,400 |  |  |  |  |
Total other comprehensive income, net of income taxes | (535) |  |  |  | (535) |  |  |  |
Issuance of restricted stock | 0 | $ 0 | 0 | 0 | 0 |  |  |  | $ 0
Issuance of restricted stock, shares |  | 83,260 |  |  |  |  |  |  |
Exercise of common stock options, value | $ 200 |  | 200 |  |  |  |  |  |
Exercise of common stock options, shares | 80,000 | 80,000 |  |  |  |  |  |  |
Forfeiture of restricted stock, value | $ 0 | $ 0 | 0 | 0 | 0 |  |  |  | $ 0
Forfeiture of restricted stock, shares |  | (34,412) |  |  |  |  |  |  |
Repurchase and retirement of common stock, value | (772) |  | (772) |  |  | $ (1,610) |  | $ (1,610) |
Repurchase and retirement of common stock, shares |  | (16,958) |  |  |  |  | (37,869) |  |
Common stock dividends | (6,001) |  |  | (6,001) |  |  |  |  |
Tax benefits on stock-based compensation | 1,691 |  | 1,691 |  |  |  |  |  |
Stock-based compensation | 2,789 |  | 2,789 |  |  |  |  |  |
Ending Balance at Jun. 30, 2015 | $ 225,747 |  | $ 22,763 | $ 202,853 | $ 131 |  |  |  |
Ending Balance, shares at Jun. 30, 2015 |  | 10,263,149 |  |  |  |  |  |  |

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