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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands | Total | Cumulative Effect, Period of Adoption, Adjustment | Total Groupon, Inc. Stockholders' Equity (Deficit) | Total Groupon, Inc. Stockholders' Equity (Deficit) Cumulative Effect, Period of Adoption, Adjustment | Common Stock | Additional Paid-In Capital | Additional Paid-In Capital Cumulative Effect, Period of Adoption, Adjustment | Treasury Stock | Accumulated Deficit | Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment | Accumulated Other Comprehensive Income (Loss) | Non-controlling Interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2020 |  |  |  |  | 39,142,896 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2020 | $ 107,674 | $ (18,969) | $ 107,675 | $ (18,969) | $ 4 | $ 2,348,114 | $ (64,319) | $ (922,666) | $ (1,320,886) | $ 45,350 | $ 3,109 | $ (1)
Beginning balance (in shares) at Dec. 31, 2020 |  |  |  |  |  |  |  | (10,294,117) |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive income (loss) | 112,426 |  | 110,746 |  |  |  |  |  | 118,668 |  | (7,922) | 1,680
Vesting of restricted stock units and performance share units (in shares) |  |  |  |  | 1,319,695 |  |  |  |  |  |  |
Shares issued under employee stock purchase plan (in shares) |  |  |  |  | 49,399 |  |  |  |  |  |  |
Shares issued under employee stock purchase plan | 1,128 |  | 1,128 |  |  | 1,128 |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards (in shares) |  |  |  |  | (504,735) |  |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards | (19,834) |  | (19,834) |  |  | (19,834) |  |  |  |  |  |
Purchase of capped call transactions, net of tax | (20,502) |  | (20,502) |  |  | (20,502) |  |  |  |  |  |
Settlement of convertible note hedges, net of tax | 14,511 |  | 14,511 |  |  | 14,511 |  |  |  |  |  |
Settlement of warrants | (1,752) |  | (1,752) |  |  | (1,752) |  |  |  |  |  |
Stock-based compensation on equity-classified awards | 36,869 |  | 36,869 |  |  | 36,869 |  |  |  |  |  |
Distributions to noncontrolling interest holders | (1,255) |  |  |  |  |  |  |  |  |  |  | (1,255)
Ending balance (in shares) at Dec. 31, 2021 |  |  |  |  | 40,007,255 |  |  |  |  |  |  |
Ending balance at Dec. 31, 2021 | 210,296 |  | 209,872 |  | $ 4 | 2,294,215 |  | $ (922,666) | (1,156,868) |  | (4,813) | 424
Ending balance (in shares) at Dec. 31, 2021 |  |  |  |  |  |  |  | (10,294,117) |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive income (loss) | (226,625) |  | (229,854) |  |  |  |  |  | (237,609) |  | 7,755 | 3,229
Vesting of restricted stock units and performance share units (in shares) |  |  |  |  | 1,101,375 |  |  |  |  |  |  |
Shares issued under employee stock purchase plan (in shares) |  |  |  |  | 83,551 |  |  |  |  |  |  |
Shares issued under employee stock purchase plan | 1,105 |  | 1,105 |  |  | 1,105 |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards (in shares) |  |  |  |  | (405,185) |  |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards | (6,043) |  | (6,043) |  |  | (6,043) |  |  |  |  |  |
Stock-based compensation on equity-classified awards | 33,395 |  | 33,395 |  |  | 33,395 |  |  |  |  |  |
Distributions to noncontrolling interest holders | $ (3,270) |  |  |  |  |  |  |  |  |  |  | (3,270)
Ending balance (in shares) at Dec. 31, 2022 | 30,492,879 |  |  |  | 40,786,996 |  |  |  |  |  |  |
Ending balance at Dec. 31, 2022 | $ 8,858 |  | 8,475 |  | $ 4 | 2,322,672 |  | $ (922,666) | (1,394,477) |  | 2,942 | 383
Ending balance (in shares) at Dec. 31, 2022 | (10,294,117) |  |  |  |  |  |  | (10,294,117) |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Comprehensive income (loss) | $ (61,523) |  | (63,999) |  |  |  |  |  | (55,410) |  | (8,589) | 2,476
Exercise of stock options (in shares) | 437,500 |  |  |  | 437,500 |  |  |  |  |  |  |
Exercise of stock options | $ 2,625 |  | 2,625 |  |  | 2,625 |  |  |  |  |  |
Vesting of restricted stock units and performance share units (in shares) |  |  |  |  | 1,385,284 |  |  |  |  |  |  |
Shares issued under employee stock purchase plan (in shares) |  |  |  |  | 45,879 |  |  |  |  |  |  |
Shares issued under employee stock purchase plan | 307 |  | 307 |  |  | 307 |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards (in shares) |  |  |  |  | (508,393) |  |  |  |  |  |  |
Tax withholdings related to net share settlements of stock-based compensation awards | (3,321) |  | (3,321) |  |  | (3,321) |  |  |  |  |  |
Stock-based compensation on equity-classified awards | 15,282 |  | 15,282 |  |  | 15,282 |  |  |  |  |  |
Distributions to noncontrolling interest holders | $ (2,540) |  |  |  |  |  |  |  |  |  |  | (2,540)
Ending balance (in shares) at Dec. 31, 2023 | 31,853,149 |  |  |  | 42,147,266 |  |  |  |  |  |  |
Ending balance at Dec. 31, 2023 | $ (40,312) |  | $ (40,631) |  | $ 4 | $ 2,337,565 |  | $ (922,666) | $ (1,449,887) |  | $ (5,647) | $ 319
Ending balance (in shares) at Dec. 31, 2023 | (10,294,117) |  |  |  |  |  |  | (10,294,117) |  |  |  |

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