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Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) | Non-controlling Interest [Member]
--- | --- | --- | --- | --- | ---
Net Income (Loss) Attributable to Parent | $ 105,123 |  |  |  |
Balance at Dec. 31, 2016 | 1,581,511 | $ 53,801 | $ 1,529,636 | $ (22,617) | $ 20,691
Net income | 112,315 |  | 105,123 |  | 7,192
Net income attributable to non-controlling interest | 7,192 |  |  |  |
Other comprehensive income (loss): |  |  |  |  |
Unrealized holding losses on available-for-sale securities, net | 0 |  | 1,159 | (17,489) |
Unrealized gains (losses) on derivative transactions, net | (16,846) |  |  |  | (516)
Foreign currency translation adjustments, net | 34,160 |  |  | 31,219 | 2,941
Payments of Ordinary Dividends, Common Stock | (50,909) |  |  |  |
Cash dividends | (50,909) |  | (50,909) |  |
Issuance of common stock under employee stock plans, net | 16,284 | 16,284 |  |  |
Stock-based compensation | 11,286 |  |  |  |
Stock-based compensation expense | 11,286 | 11,286 |  |  |
Repurchase of common stock | (35,542) | (35,542) |  |  |
Balance at Dec. 31, 2017 | 1,652,259 | $ 45,829 | 1,585,009 | (8,887) | 30,308
Balance, shares at Dec. 31, 2016 |  | 69,873,000 |  |  |
Other comprehensive income (loss): |  |  |  |  |
Issuance of common stock under employee stock plans, net (in shares) |  | 787,000 |  |  |
Repurchase of common stock (in shares) |  | (665,000) |  |  |
Balance, shares at Dec. 31, 2017 |  | 69,995,000 |  |  |
Other comprehensive income (loss): |  |  |  |  |
Payments to Noncontrolling Interests | 0 |  |  |  |
Net Income (Loss) Attributable to Parent |  |  | 268,256 |  |
Net income | 274,948 |  | 268,256 |  | 6,692
Net income attributable to non-controlling interest | 6,692 |  |  |  |
Unrealized holding losses on available-for-sale securities, net | (56) |  |  | (56) |
Unrealized gains (losses) on derivative transactions, net | 24,262 |  |  | 23,195 | 1,067
Foreign currency translation adjustments, net | (18,079) |  |  | (17,800) | (279)
Payments of Ordinary Dividends, Common Stock | (62,664) |  |  |  |
Cash dividends | (62,664) |  | (62,664) |  |
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders | (21,332) |  |  |  | 21,332
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | 14,085 |  | 14,600 | (515) |
Issuance of common stock under employee stock plans, net | 14,199 | $ 14,199 |  |  |
Stock-based compensation | 14,291 |  |  |  |
Stock-based compensation expense | 14,291 | 14,291 |  |  |
Repurchase of common stock | (201,600) | $ (74,319) | 127,281 |  |
Balance at Dec. 31, 2018 | $ 1,690,313 |  | 1,677,920 | (4,063) | 16,456
Other comprehensive income (loss): |  |  |  |  |
Issuance of common stock under employee stock plans, net (in shares) |  | 600,000 |  |  |
Repurchase of common stock (in shares) |  | (2,349,000) |  |  |
Balance, shares at Dec. 31, 2018 | 68,246 | 68,246,000 |  |  |
Other comprehensive income (loss): |  |  |  |  |
Payments to Noncontrolling Interests | $ 0 |  |  |  |
Net Income (Loss) Attributable to Parent |  |  | 330,489 |  |
Net income | 330,489 |  |  |  |
Net income attributable to non-controlling interest |  |  |  |  | 0
Unrealized holding losses on available-for-sale securities, net | 56 |  |  | 56 |
Unrealized gains (losses) on derivative transactions, net | (2,383) |  |  | (2,383) |
Foreign currency translation adjustments, net | 2,064 |  |  | 2,064 |
Payments of Ordinary Dividends, Common Stock |  |  | (65,127) |  |
Cash dividends | (65,127) |  |  |  |
Purchase of non-controlling interest | (16,555) |  |  | (99) | (16,456)
Issuance of common stock under employee stock plans, net | 13,987 | $ 13,987 |  |  |
Stock-based compensation |  | 17,832 |  |  |
Stock-based compensation expense | 17,832 |  |  |  |
Repurchase of common stock | (121,229) | (26,882) | (94,347) |  |
Balance at Dec. 31, 2019 | $ 1,849,447 | $ 4,937 | $ 1,848,935 | $ (4,425) | $ 0
Other comprehensive income (loss): |  |  |  |  |
Issuance of common stock under employee stock plans, net (in shares) |  | 558,000 |  |  |
Repurchase of common stock (in shares) |  | (1,243,000) |  |  |
Balance, shares at Dec. 31, 2019 | 67,561 | 67,561,000 |  |  |
Other comprehensive income (loss): |  |  |  |  |
Payments to Noncontrolling Interests | $ 17,880 |  |  |  |

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