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v3.19.3.a.u2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Common Stock | Retained Earnings | Accumulated Other Comprehensive Loss | Total
--- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2016 | $ 206,186 | $ 293,885 | $ (1,882) | $ 498,189
Beginning balance (in shares) at Dec. 31, 2016 | 44,645 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net income |  | 27,523 |  | 27,523
Other comprehensive income (loss) |  |  | 3,416 | 3,416
Stock-based compensation expense | $ 4,075 |  |  | 4,075
Options exercised | $ 5,689 |  |  | 5,689
Options exercised (in shares) | 404 |  |  |
Issuance of common stock under Employee Stock Purchase Plan | $ 836 |  |  | 836
Issuance of common stock under Employee Stock Purchase Plans (in shares) | 24 |  |  |
Issuance of common stock, net of offering costs | $ 136,606 |  |  | $ 136,606
Issuance of common stock, net of offering costs (in shares) | 5,175 |  |  |
Shares surrendered in exchange for exercise of stock options (in shares) |  |  |  | 0
Ending balance at Dec. 31, 2017 | $ 353,392 | 321,408 | 1,534 | $ 676,334
Ending balance (in shares) at Dec. 31, 2017 | 50,248 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net income |  | 42,017 |  | 42,017
Other comprehensive income (loss) |  |  | (3,567) | (3,567)
Stock-based compensation expense | $ 6,117 |  |  | 6,117
Options exercised | $ 10,634 |  |  | 10,634
Options exercised (in shares) | 690 |  |  |
Issuance of common stock under Employee Stock Purchase Plan | $ 1,087 |  |  | 1,087
Issuance of common stock under Employee Stock Purchase Plans (in shares) | 22 |  |  |
Issuance of common stock, net of offering costs | $ 205,030 |  |  | 205,030
Issuance of common stock, net of offering costs (in shares) | 4,025 |  |  |
Shares surrendered in exchange for payment of payroll tax liabilities | $ (2,616) |  |  | (2,616)
Shares surrendered in exchange for payment of payroll tax liabilities (in shares) | (49) |  |  |
Shares surrendered in exchange for exercise of stock options | $ (2,261) |  |  | $ (2,261)
Shares surrendered in exchange for exercise of stock options (in shares) | (43) |  |  | (43)
Ending balance at Dec. 31, 2018 | $ 571,383 | 363,425 | (2,033) | $ 932,775
Ending balance (in shares) at Dec. 31, 2018 | 54,893 |  |  | 54,893
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Net income |  | 5,451 |  | $ 5,451
Reclassification adjustment upon adoption of ASU | ASU 2016-02 |  | 93 |  | 93
Reclassification adjustment upon adoption of ASU | ASU 2018-02 |  | (748) | 748 |
Other comprehensive income (loss) |  |  | (4,009) | (4,009)
Stock-based compensation expense | $ 9,382 |  |  | 9,382
Options exercised | $ 4,930 |  |  | $ 4,930
Options exercised (in shares) | 288 |  |  | 288
Issuance of common stock under Employee Stock Purchase Plan | $ 1,415 |  |  | $ 1,415
Issuance of common stock under Employee Stock Purchase Plans (in shares) | 35 |  |  |
Shares surrendered in exchange for exercise of stock options | $ (93) |  |  | $ (93)
Shares surrendered in exchange for exercise of stock options (in shares) | (3) |  |  | (3)
Ending balance at Dec. 31, 2019 | $ 587,017 | $ 368,221 | $ (5,294) | $ 949,944
Ending balance (in shares) at Dec. 31, 2019 | 55,213 |  |  | 55,213

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