v3.26.1
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Selling and marketing $ 134,055 $ 123,527  
Accrued expenses 113,971   $ 125,159
Accounts payable 21,613   29,072
Capitalized prepaid marketing expense 8,100 8,100  
Prepaid marketing expense 127,724   132,849
Cash equivalents 376,100   325,900
Restricted cash 738   738
Cash and cash equivalents $ 984,590   1,064,875
ESPP      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
ESPP purchase discount 15.00%    
ESPP | Call Option      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Percent look-back feature, portion covered by option 0.85    
ESPP | Put Option      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Percent look-back feature, portion covered by option 0.15    
Interest-Bearing Deposits      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Cash and cash equivalents $ 150,000    
Shopify | Revenue Sharing Agreement      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Selling and marketing 8,900 7,900  
Accrued expenses 2,900   3,000
Accounts payable 3,000   3,000
Shopify | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Marketing expense 13,200 $ 13,200  
Prepaid marketing expense 127,700   $ 132,800
Unrecognized marketing expense $ 176,300    
Warrants, cost not yet recognized, period for recognition 3 years 3 months 18 days