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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive (Loss) Income
--- | --- | --- | --- | --- | ---
Balance, beginning of period (in shares) at Dec. 31, 2017 |  | 78,081 |  |  |
Balance, beginning of period at Dec. 31, 2017 | $ 655,870 | $ 781 | $ 152,097 | $ 509,697 | $ (6,705)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Repurchase of common stock (in shares) |  | (1,001) |  |  |
Repurchase of common stock | (55,275) | $ (10) | (55,265) |  |
Issuance of common stock for stock compensation plans (in shares) |  | 1,413 |  |  |
Issuance of common stock for stock compensation plans | (39,361) | $ 14 | (39,375) |  |
Issuance of common stock under Employee Stock Purchase Plan (in shares) |  | 33 |  |  |
Issuance of common stock under the employee stock purchase plan | 1,767 |  | 1,767 |  |
Stock-based compensation | 63,981 |  | 63,981 |  |
Cash dividends declared | (9,451) |  |  | (9,451) |
Other comprehensive (loss) income | (6,617) |  |  |  | (6,617)
Net (loss) income | 10,617 |  |  | 10,617 |
Balance, end of period (in shares) at Dec. 31, 2018 |  | 78,526 |  |  |
Balance, end of period at Dec. 31, 2018 | 621,531 | $ 785 | 123,205 | 510,863 | (13,322)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Repurchase of common stock (in shares) |  | (333) |  |  |
Repurchase of common stock | (21,136) | $ (3) | (21,133) |  |
Issuance of common stock for stock compensation plans (in shares) |  | 1,375 |  |  |
Issuance of common stock for stock compensation plans | (44,839) | $ 14 | (44,853) |  |
Issuance of common stock under Employee Stock Purchase Plan (in shares) |  | 31 |  |  |
Issuance of common stock under the employee stock purchase plan | 2,202 |  | 2,202 |  |
Stock-based compensation | 81,102 |  | 81,102 |  |
Cash dividends declared | (9,511) |  |  | (9,511) |
Other comprehensive (loss) income | 94 |  |  |  | 94
Net (loss) income | $ (90,433) |  |  | (90,433) |
Balance, end of period (in shares) at Dec. 31, 2019 | 79,599 | 79,599 |  |  |
Balance, end of period at Dec. 31, 2019 | $ 539,010 | $ 796 | 140,523 | 410,919 | (13,228)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Equity component of convertible senior notes, net | 61,604 |  | 61,604 |  |
Repurchase of common stock (in shares) |  | (278) |  |  |
Repurchase of common stock | (28,274) | $ (3) | (28,271) |  |
Issuance of common stock for stock compensation plans (in shares) |  | 1,536 |  |  |
Issuance of common stock for stock compensation plans | (75,562) | $ 16 | (75,578) |  |
Issuance of common stock under Employee Stock Purchase Plan (in shares) |  | 33 |  |  |
Issuance of common stock under the employee stock purchase plan | 3,039 |  | 3,039 |  |
Stock-based compensation | 103,115 |  | 103,115 |  |
Cash dividends declared | (9,667) |  |  | (9,667) |
Other comprehensive (loss) income | 10,280 |  |  |  | 10,280
Net (loss) income | $ (61,373) |  |  | (61,373) |
Balance, end of period (in shares) at Dec. 31, 2020 | 80,890 | 80,890 |  |  |
Balance, end of period at Dec. 31, 2020 | $ 542,172 | $ 809 | $ 204,432 | $ 339,879 | $ (2,948)

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