v3.25.4
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