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Stockholders' Equity - Additional Information (Detail) $ / shares in Units, $ in Millions |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 18, 2019 shares | Dec. 31, 2025 USD ($) day $ / shares shares | Dec. 31, 2024 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares | May 08, 2024 shares | May 03, 2022 shares | Nov. 01, 2017 vote $ / shares shares | Oct. 23, 2017 shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Shares authorized, annual increase, percent | 2.00% |  |  |  |  |  |  |
Award vesting period |  | 4 years |  |  |  |  |  |
Contractual terms |  | 10 years |  |  |  |  |  |
Options granted, weighted average grant date fair value (in dollars per share) | $ / shares |  | $ 4.84 | $ 4.90 | $ 6.71 |  |  |  |
Equity-based compensation | $ |  | $ 11.5 | $ 13.6 | $ 10.5 |  |  |  |
Unrecognized equity-based compensation expense | $ |  | $ 20.1 |  |  |  |  |  |
Equity-based compensation costs not yet recognized, remaining weighted average period |  | 2 years 10 months 24 days |  |  |  |  |  |
Performance Stock Options |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Closing price training period calculation | day |  | 90 |  |  |  |  |  |
Restricted Stock Unit | Share-Based Payment Arrangement, Tranche One |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  | 3 years |  |  |  |  |  |
Award vesting rights, percentage |  | 33.30% |  |  |  |  |  |
Restricted Stock Unit | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Award vesting rights, percentage |  | 33.30% |  |  |  |  |  |
Equity instruments other than options, stock price hurdle (in dollars per share) | $ / shares |  | $ 8.00 |  |  |  |  |  |
Closing price training period calculation | day |  | 45 |  |  |  |  |  |
Restricted Stock Unit | Share-Based Payment Arrangement, Tranche Three |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Award vesting rights, percentage |  | 33.30% |  |  |  |  |  |
Equity instruments other than options, stock price hurdle (in dollars per share) | $ / shares |  | $ 20.00 |  |  |  |  |  |
Closing price training period calculation | day |  | 45 |  |  |  |  |  |
2017 Plan |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares reserved for future issuance (in shares) |  | 1,083,078 |  |  |  |  |  |
2017 Plan | Performance Stock Unit |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Estimated target achievement, percent |  | 97.90% |  |  |  |  |  |
2019 Plan |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  | 10,077,523 |  |  |  |  |  |
Common stock, shares reserved for future issuance (in shares) |  | 3,480,715 |  |  |  |  |  |
2024 Plan |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares reserved for future issuance (in shares) |  | 243,195 |  |  |  |  |  |
Funko Acquisition Holdings, L.L.C. |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Equity-based compensation | $ |  | $ 11.5 | $ 13.6 | $ 10.5 |  |  |  |
Funko Acquisition Holdings, L.L.C. | FAH LLC |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Agreement stock ratio |  |  |  |  |  | 1 |  |
Amended and Restated Certificate of Incorporation |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  |  | 20,000,000 |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.0001 |
Class A Common Stock |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  | 200,000,000 | 200,000,000 |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  | $ 0.0001 | $ 0.0001 |  |  |  |  |
Number of vote per share | vote |  |  |  |  |  |  | 1 |
Class A Common Stock | 2017 Plan |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  |  |  |  |  |  |  | 5,518,518
Class A Common Stock | 2019 Plan |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) | 3,000,000 |  |  |  |  |  |  |
Class A Common Stock | 2024 Plan |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  |  |  |  | 1,500,000 |  |  |
Class A Common Stock | Funko Acquisition Holdings, L.L.C. | FAH LLC |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Agreement stock ratio |  |  |  |  |  | 1 |  |
Class A Common Stock | Amended and Restated Certificate of Incorporation |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  |  |  |  | 200,000,000 |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.0001 |
Class B Common Stock |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  | 50,000,000 | 50,000,000 |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  | $ 0.0001 | $ 0.0001 |  |  |  |  |
Number of vote per share | vote |  |  |  |  |  |  | 1 |
Class B Common Stock | Funko Acquisition Holdings, L.L.C. | FAH LLC |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Agreement stock ratio |  |  |  |  |  | 1 |  |
Class B Common Stock | Amended and Restated Certificate of Incorporation |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  |  |  |  | 50,000,000 |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.0001 |

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