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Consolidated Statements of Stockholders' Equity Statement - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Treasury Stock | Parent
--- | --- | --- | --- | --- | --- | --- | ---
Common stock, shares, outstanding (in shares) |  | 16,405,000 |  |  |  |  |
Common Stock, Value, Issued |  | $ 23 |  |  |  |  |
TOTAL EQUITY | $ 699,363 |  | $ 329,753 | $ (27) | $ 1,015,622 | $ (646,008) |
Exercises of stock options and stock-settled SARs (Shares) |  | 113,000 |  |  |  |  |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition |  |  | 27,058 |  |  |  | $ 27,058
Stock Repurchased During Period, Shares |  | 1,553,000 |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  | $ 2 | 335,137 |  |  |  | 335,139
Total number of shares purchased in year | 39,760 | 40,000 |  |  |  |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  |  |  |  | 7,951 | 7,951
Other Comprehensive Income (Loss), Net of Tax |  |  |  | 2,083 |  |  |
Unrealized gain on short-term investments, net of tax |  |  |  |  |  |  | 2,083
Adjustments to Additional Paid in Capital, Warrant Issued |  |  | 105 |  |  |  | 105
Net Income | $ 151,853 |  |  |  | 151,853 |  | 151,853
Cash dividends (per Share) | $ 0 |  |  |  |  |  |
Common stock, shares, outstanding (in shares) |  | 18,111,000 |  |  |  |  |
Common Stock, Value, Issued |  | $ 25 |  |  |  |  |
TOTAL EQUITY | $ 1,223,552 |  | 692,053 | 2,056 | 1,167,475 | (638,057) |
Exercises of stock options and stock-settled SARs (Shares) |  | 323,000 |  |  |  |  |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition |  |  | 17,418 |  |  |  | 17,418
Stock Repurchased During Period, Shares |  | (379,000) |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  | (29,905) | (29,905)
Total number of shares purchased in year | 73,268 | 73,000 |  |  |  |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  |  |  |  | 7,939 | 7,939
Other Comprehensive Income (Loss), Net of Tax |  |  |  | (799) |  |  |
Unrealized gain on short-term investments, net of tax |  |  |  |  |  |  | (799)
Net Income | $ 2,493 |  |  |  | 2,493 |  | 2,493
Cash dividends (per Share) | $ 0 |  |  |  |  |  |
Common stock, shares, outstanding (in shares) |  | 18,128,000 |  |  |  |  |
Common Stock, Value, Issued | $ 25 | $ 25 |  |  |  |  |
TOTAL EQUITY | $ 1,220,698 |  | 709,471 | 1,257 | 1,169,968 | (660,023) |
Exercises of stock options and stock-settled SARs (Shares) |  | 415,000 |  |  |  |  |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition |  | $ 1 | 31,584 |  |  |  | 31,585
Stock Repurchased During Period, Shares |  | (374,000) |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  | (30,076) | (30,076)
Total number of shares purchased in year | 99,802 | 100,000 |  |  |  |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan |  |  |  |  |  | 8,167 | 8,167
Other Comprehensive Income (Loss), Net of Tax |  |  |  | 2,734 |  |  |
Unrealized gain on short-term investments, net of tax |  |  |  |  |  |  | 2,734
Net Income | $ 117,596 |  |  |  | 117,596 |  | $ 117,596
Cash dividends (per Share) | $ 1.20 |  |  |  |  |  |
Common stock, shares, outstanding (in shares) |  | 18,269,000 |  |  |  |  |
Common Stock, Value, Issued | $ 26 | $ 26 |  |  |  |  |
TOTAL EQUITY | $ 1,328,560 |  | $ 741,055 | $ 3,991 | $ 1,265,420 | $ (681,932) |

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