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CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY (Unaudited) (USD $) In Thousands | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2012 | $ 933,534 | $ 24,204 | $ 480,595 | $ 424,317 | $ 4,418
Beginning Balance, Shares at Dec. 31, 2012 |  | 48,409 |  |  |
Stock-based compensation | 6,440 | 9 | 6,431 |  |
Stock-based compensation, Shares |  | 18 |  |  |
Restricted stock used for tax withholdings | (1,680) | (55) | (1,625) |  |
Restricted stock used for tax withholdings, Shares |  | (111) |  |  |
Excess income taxes related to stock-based compensation | (2,015) |  | (2,015) |  |
Net income | 102,561 |  |  | 102,561 |
Dividends | (6,041) |  |  | (6,041) |
Other comprehensive loss | (4,418) |  |  |  | (4,418)
Ending Balance at Jun. 30, 2013 | $ 1,028,381 | $ 24,158 | $ 483,386 | $ 520,837 |
Ending Balance, Shares at Jun. 30, 2013 |  | 48,316 |  |  |

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