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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Cumulative Effect, Period of Adoption, Adjustment | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit | Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balances (in shares) at Dec. 30, 2017 |  |  | 72,532,176 |  |  |  |
Beginning balances at Dec. 30, 2017 | $ 458,637 | $ (50) | $ 73 | $ 843,116 | $ 3,021 | $ (387,573) | $ (50)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Issuance of common stock pursuant to exercise of options for cash (in shares) |  |  | 134,609 |  |  |  |
Issuance of common stock pursuant to exercise of options for cash | 1,158 |  |  | 1,158 |  |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  |  | 862,630 |  |  |  |
Issuance of common stock pursuant to vesting of restricted stock units, net of stock withheld for tax | (5,791) |  |  | (5,791) |  |  |
Issuance of common stock under the Employee Stock Purchase Plan (in shares) |  |  | 610,297 |  |  |  |
Issuance of common stock under the Employee Stock Purchase Plan | 6,662 |  | $ 1 | 6,661 |  |  |
Stock-based compensation | 17,753 |  |  | 17,753 |  |  |
Other comprehensive income (loss) | (2,241) |  |  |  | (2,241) |  |
Net income | 104,036 |  |  |  |  | 104,036 |
Ending balances (in shares) at Dec. 29, 2018 |  |  | 74,139,712 |  |  |  |
Ending balances at Dec. 29, 2018 | 580,164 |  | $ 74 | 862,897 | 780 | (283,587) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Issuance of common stock pursuant to exercise of options for cash (in shares) |  |  | 162,956 |  |  |  |
Issuance of common stock pursuant to exercise of options for cash | 1,176 |  |  | 1,176 |  |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  |  | 918,051 |  |  |  |
Issuance of common stock pursuant to vesting of restricted stock units, net of stock withheld for tax | (8,025) |  | $ 1 | (8,026) |  |  |
Issuance of common stock under the Employee Stock Purchase Plan (in shares) |  |  | 544,271 |  |  |  |
Issuance of common stock under the Employee Stock Purchase Plan | 6,807 |  | $ 1 | 6,806 |  |  |
Stock-based compensation | 22,968 |  |  | 22,968 |  |  |
Other comprehensive income (loss) | (1,439) |  |  |  | (1,439) |  |
Net income | $ 39,346 |  |  |  |  | 39,346 |
Ending balances (in shares) at Dec. 28, 2019 | 75,764,990 |  | 75,764,990 |  |  |  |
Ending balances at Dec. 28, 2019 | $ 640,997 |  | $ 76 | 885,821 | (659) | (244,241) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Issuance of common stock pursuant to exercise of options for cash (in shares) |  |  | 255,769 |  |  |  |
Issuance of common stock pursuant to exercise of options for cash | 2,135 |  | $ 1 | 2,134 |  |  |
Issuance of common stock pursuant to vesting of restricted stock units (in shares) |  |  | 931,672 |  |  |  |
Issuance of common stock pursuant to vesting of restricted stock units, net of stock withheld for tax | (15,450) |  | $ 1 | (15,451) |  |  |
Issuance of common stock under the Employee Stock Purchase Plan (in shares) |  |  | 485,566 |  |  |  |
Issuance of common stock under the Employee Stock Purchase Plan | 7,875 |  |  | 7,875 |  |  |
Stock-based compensation | 23,459 |  |  | 23,459 |  |  |
Other comprehensive income (loss) | 6,545 |  |  |  | 6,545 |  |
Net income | $ 78,523 |  |  |  |  | 78,523 |
Ending balances (in shares) at Dec. 26, 2020 | 77,437,997 |  | 77,437,997 |  |  |  |
Ending balances at Dec. 26, 2020 | $ 744,084 |  | $ 78 | $ 903,838 | $ 5,886 | $ (165,718) |

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