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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2017 | $ 764,597 | $ 702 | $ 610,345 | $ 550,866 | $ (319,960) | $ (77,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | (18,769) |  |  | (18,769) |  |
Other comprehensive loss | (11,110) |  |  |  |  | (11,110)
Stock-based compensation | 20,642 |  | 20,642 |  |  |
Shares issued and forfeited, net, under stock plans including income tax benefits | 20,712 |  | 1,560 |  | 19,152 |
Repurchase of common stock | (54,527) |  |  |  | (54,527) |
Repurchase of restricted share awards and restricted share units for tax withholdings | (2,588) |  |  |  | (2,588) |
Cumulative effect of accounting change, ASC 606 | 243,981 |  |  | 243,981 |  |
Ending balance at Sep. 30, 2018 | 962,938 | 702 | 632,547 | 776,078 | (357,923) | (88,466)
Beginning balance at Jun. 30, 2018 | 940,715 | 702 | 624,851 | 760,845 | (361,079) | (84,604)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | 15,233 |  |  | 15,233 |  |
Other comprehensive loss | (3,862) |  |  |  |  | (3,862)
Stock-based compensation | 6,575 |  | 6,575 |  |  |
Shares issued and forfeited, net, under stock plans including income tax benefits | 4,277 |  | 1,121 |  | 3,156 |
Ending balance at Sep. 30, 2018 | 962,938 | 702 | 632,547 | 776,078 | (357,923) | (88,466)
Beginning balance at Dec. 31, 2018 | 1,048,231 | 702 | 632,235 | 863,768 | (355,857) | (92,617)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | 11,576 |  |  | 11,576 |  |
Other comprehensive loss | (2,019) |  |  |  |  | (2,019)
Stock-based compensation | 30,328 |  | 30,328 |  |  |
Shares issued and forfeited, net, under stock plans including income tax benefits | 9,260 |  | (1,910) |  | 11,170 |
Repurchase of common stock | (35,617) |  |  |  | (35,617) |
Repurchase of restricted share awards and restricted share units for tax withholdings | (2,822) |  |  |  | (2,822) |
Ending balance at Sep. 30, 2019 | 1,058,937 | 702 | 660,653 | 875,344 | (383,126) | (94,636)
Beginning balance at Jun. 30, 2019 | 1,052,577 | 702 | 650,797 | 843,530 | (349,426) | (93,026)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | 31,814 |  |  | 31,814 |  |
Other comprehensive loss | (1,610) |  |  |  |  | (1,610)
Stock-based compensation | 9,371 |  | 9,371 |  |  |
Shares issued and forfeited, net, under stock plans including income tax benefits | 1,784 |  | 485 |  | 1,299 |
Repurchase of common stock | (34,986) |  |  |  | (34,986) |
Repurchase of restricted share awards and restricted share units for tax withholdings | (13) |  |  |  | (13) |
Ending balance at Sep. 30, 2019 | $ 1,058,937 | $ 702 | $ 660,653 | $ 875,344 | $ (383,126) | $ (94,636)

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