Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Class of Stock [Line Items]      
Accumulated deficit $ 590,927   $ 577,858
Cash and cash equivalents $ 81,653 $ 74,428 81,084
Customer complementary membership period 60 days    
Contractual liabilities $ 9,152   10,878
Fulfillment cost 17,000 24,400  
Deferred Revenue      
Class of Stock [Line Items]      
Contractual liabilities 9,200   10,900
Contract with customer, liability, revenue recognized 6,600    
Other Current Liabilities      
Class of Stock [Line Items]      
Contractual liabilities 200   $ 200
Contract with customer, liability, revenue recognized 200    
Shipping and Handling      
Class of Stock [Line Items]      
Fulfillment cost 10,400 14,300  
Fulfillment Labor      
Class of Stock [Line Items]      
Fulfillment cost $ 3,900 $ 6,600  
Revenue Benchmark | Supplier Concentration Risk | Five Suppliers      
Class of Stock [Line Items]      
Concentration risk, percentage 50.00% 50.00%