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Condensed Consolidated Statement Of Stockholders' Equity - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands | Total | Common Stock | Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Income | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2017 | $ 652,745 | $ 277 | $ 203,990 | $ 475,506 | $ 2,439 | $ (29,467)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 128,372 |  |  | 128,372 |  |
Issuance of 228,146 shares of common stock pursuant to stock-based awards, net of shares tendered for payment of taxes | (14,114) | 2 | (14,116) |  |  |
Stock-based compensation expense | 13,852 |  | 13,852 |  |  |
Other comprehensive loss |  |  |  |  | (1,095) |
Cash dividends ($1.75 per share) | (44,114) |  |  | (44,114) |  |
Dividend equivalents on stock-based awards |  |  | 1,022 | (1,022) |  |
Ending balance at Sep. 30, 2018 | $ 735,646 | $ 279 | $ 204,748 | $ 558,742 | $ 1,344 | $ (29,467)

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