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v3.20.1

Consolidated Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2018 |  | 170,820 |  |  |
Beginning Balance at Dec. 31, 2018 | $ 1,135,263 | $ 342 | $ 529,208 | $ 646,214 | $ (40,501)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Issuance of common stock under stock plans (in shares) |  | 717 |  |  |
Issuance of common stock under stock plans | 14,346 | $ 1 | 14,345 |  |
Stock-based compensation expense | 12,281 |  | 12,281 |  |
Payment of dividends | (8,564) |  |  | (8,564) |
Net income | 33,104 |  |  | 33,104 |
Net unrealized gain (loss) on available-for-sale investments, net of tax of ($82) | 2,251 |  |  |  | 2,251
Reclassification of credit loss on investments | 0 |  |  |  |
Reclassification of net realized (gain) loss on the sale of available-for-sale investments | (40) |  |  |  | (40)
Foreign currency translation adjustment | 218 |  |  |  | 218
Ending Balance (in shares) at Mar. 31, 2019 |  | 171,537 |  |  |
Ending Balance at Mar. 31, 2019 | $ 1,188,859 | $ 343 | 555,834 | 670,754 | (38,072)
Beginning Balance (in shares) at Dec. 31, 2019 | 172,440 | 172,440 |  |  |
Beginning Balance at Dec. 31, 2019 | $ 1,355,710 | $ 345 | 639,372 | 753,268 | (37,275)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Issuance of common stock under stock plans (in shares) |  | 463 |  |  |
Issuance of common stock under stock plans | 9,971 | $ 1 | 9,970 |  |
Repurchase of common stock (in shares) |  | (1,215) |  |  |
Repurchase of common stock | (51,036) | $ (2) |  | (51,034) |
Stock-based compensation expense | 14,790 |  | 14,790 |  |
Payment of dividends | (9,503) |  |  | (9,503) |
Net income | 20,477 |  |  | 20,477 |
Net unrealized gain (loss) on available-for-sale investments, net of tax of ($82) | (3,861) |  |  |  | (3,861)
Reclassification of credit loss on investments | (160) |  |  |  | 160
Reclassification of net realized (gain) loss on the sale of available-for-sale investments | (1,850) |  |  |  | (1,850)
Foreign currency translation adjustment | $ (7,365) |  |  |  | (7,365)
Ending Balance (in shares) at Mar. 29, 2020 | 171,688 | 171,688 |  |  |
Ending Balance at Mar. 29, 2020 | $ 1,327,493 | $ 344 | $ 664,132 | $ 713,208 | $ (50,191)

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