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Consolidated Statements of Stockholders' Equity (USD $) In Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Noncontrolling Interest [Member] | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 329 | $ 78,428 | $ 215,236 | $ 1,911 | $ 295,904
Balance (in Shares) at Dec. 31, 2010 | 32,925 |  |  |  |
Net income |  |  | 24,285 |  | 24,285
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards | 1 | 137 | (1) |  | 137
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards (in Shares) | 52 |  |  |  |
Tax benefits from share-based payment arrangement exercises |  | 164 |  |  | 164
Share-based payment arrangement compensation expense |  | 1,349 |  |  | 1,349
Dividends on common stock |  |  | (1,758) |  | (1,758)
Income before income taxes attributable to noncontrolling interest |  |  |  | 807 | 807
Noncontrolling interest distributions |  |  |  | (529) | (529)
Balance at Dec. 31, 2011 | 330 | 80,078 | 237,762 | 2,189 | 320,359
Balance (in Shares) at Dec. 31, 2011 | 32,977 |  |  |  |
Net income |  |  | 27,267 |  | 27,267
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards | 2 | 967 | (1) |  | 968
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards (in Shares) | 187 |  |  |  |
Tax benefits from share-based payment arrangement exercises |  | 409 |  |  | 409
Share-based payment arrangement compensation expense |  | 1,225 |  |  | 1,225
Dividends on common stock |  |  | (18,679) |  | (18,679)
Income before income taxes attributable to noncontrolling interest |  |  |  | 497 | 497
Noncontrolling interest distributions |  |  |  | (123) | (123)
Balance at Dec. 31, 2012 | 332 | 82,679 | 246,349 | 2,563 | 331,923
Balance (in Shares) at Dec. 31, 2012 | 33,164 |  |  |  |
Net income |  |  | 30,147 |  | 30,147
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards | 1 | 1,125 |  |  | 1,126
Issuance of common stock from share-based payment arrangement exercises and vesting of performance unit awards (in Shares) | 137 |  |  |  |
Tax benefits from share-based payment arrangement exercises |  | 189 |  |  | 189
Share-based payment arrangement compensation expense |  | 1,084 |  |  | 1,084
Dividends on common stock |  |  | (2,769) |  | (2,769)
Income before income taxes attributable to noncontrolling interest |  |  |  | 84 | 84
Noncontrolling interest distributions |  |  |  | (84) | (84)
Change to equity method of accounting |  |  |  | (2,563) | (2,563)
Balance at Dec. 31, 2013 | $ 333 | $ 85,077 | $ 273,727 |  | $ 359,137
Balance (in Shares) at Dec. 31, 2013 | 33,301 |  |  |  |

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