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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive (Loss) Income | Accumulated Deficit
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2016 | $ 1,828,659 |  | $ 24,897 | $ 1,593,684 | $ (20,214) | $ 230,292
Balance, Shares at Dec. 31, 2016 |  |  | 199,177 |  |  |
Net issuance of common stock under stock-based plans | 11,024 |  | $ 277 | 10,747 |  |
Net issuance of common stock under stock-based plans (in shares) |  |  | 2,211 |  |  |
Stock-based compensation expense | 33,982 |  |  | 33,982 |  |
Repurchase of common stock | (200,304) |  | $ (730) |  |  | (199,574)
Repurchase of common stock (in shares) |  |  | (5,840) |  |  |
Tax benefit related to stock options and restricted stock units | 39,081 |  |  |  |  | 39,081
Cash dividends | (55,478) |  |  |  |  | (55,478)
Net income | 257,692 |  |  |  |  | 257,692
Other comprehensive loss | 38,990 |  |  |  | 38,990 |
Balance at Dec. 31, 2017 | 1,953,646 |  | $ 24,444 | 1,638,413 | 18,776 | 272,013
Balance, Shares at Dec. 31, 2017 |  |  | 195,548 |  |  |
Net issuance of common stock under stock-based plans | 129 |  | $ 201 | (72) |  |
Net issuance of common stock under stock-based plans (in shares) |  |  | 1,613 |  |  |
Stock-based compensation expense | 33,304 |  |  | 33,304 |  |
Repurchase of common stock | (832,356) |  | $ (2,705) |  |  | (829,651)
Repurchase of common stock (in shares) |  |  | (21,639) |  |  |
Cash dividends | (67,367) |  |  |  |  | (67,367)
Net income | 451,779 |  |  |  |  | 451,779
Other comprehensive loss | (29,460) |  |  |  | (29,460) |
Reclassification of unrealized gains on equity securities |  |  |  |  | (3,125) | 3,125
Reclassification of tax effects resulting from the Tax Reform Act | 769 | [1] |  |  | 769 | (769)
Balance at Dec. 31, 2018 | 1,522,354 |  | $ 21,940 | 1,671,645 | (13,040) | (158,191)
Balance, Shares at Dec. 31, 2018 |  |  | 175,522 |  |  |
Cumulative effect of changes in accounting principle related to revenue recognition | 12,679 |  |  |  |  | 12,679
Net issuance of common stock under stock-based plans | 10,622 |  | $ 223 | 10,399 |  |
Net issuance of common stock under stock-based plans (in shares) |  |  | 1,784 |  |  |
Stock-based compensation expense | 38,085 |  |  | 38,085 |  |
Repurchase of common stock | (491,202) |  | $ (1,362) |  |  | (489,840)
Repurchase of common stock (in shares) |  |  | (10,896) |  |  |
Cash dividends | (61,355) |  |  |  |  | (61,355)
Net income | 467,468 |  |  |  |  | 467,468
Other comprehensive loss | (5,814) |  |  |  | (5,814) |
Balance at Dec. 31, 2019 | $ 1,480,158 |  | $ 20,801 | $ 1,720,129 | $ (18,854) | $ (241,918)
Balance, Shares at Dec. 31, 2019 |  |  | 166,410 |  |  |
[1] | In the year ended December 31, 2018, Teradyne early adopted ASU 2018-02, “Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” As a result, the stranded tax effects resulting from the Tax Reform Act enacted in December 2017 were reclassified from accumulated other comprehensive income to retained earnings.

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