Summary of Significant Accounting Policies - Narrative (Details)				1 Months Ended		7 Months Ended	12 Months Ended
	Jun. 29, 2022 USD ($)	Jun. 14, 2021 USD ($) $ / shares shares	May 25, 2021	Jun. 30, 2023	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) reporting_unit	Dec. 31, 2023 USD ($) segment reporting_unit	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) shares	Aug. 31, 2023 USD ($)
Subsidiary, Sale of Stock [Line Items]
Conversion of convertible preferred stock (in shares) | shares		19,243,795							19,243,795
Deferred offering costs		$ 5,500,000
Reverse stock split ratio			0.3333
Number of operating segments | segment							1
Number of reportable segments | segment							1
Number of reporting units | reporting_unit						1	1
Payments to acquire available for sale securities							$ 191,093,000	$ 0	$ 0
Accrued interest receivable						$ 0	500,000	0
Available-for-sale, debt securities credit losses							0
Allowance for seller refunds						300,000	200,000	300,000
Impairment of long-lived assets							0	0	0
Goodwill impairment losses							$ 0	0	0
Stock repurchase program, authorized amount										$ 20,000,000
Commission fees percentage, minimum							5.00%
Commission fees percentage, maximum							50.00%
Processing fees percentage							3.00%
Contract costs, amortization period							3 years
Costs to obtain revenue contracts						500,000	$ 500,000	500,000
Capitalized contract cost, current						300,000	300,000	300,000
Capitalized contract cost, noncurrent						200,000	200,000	200,000
Amortization of costs to obtain revenue contracts							326,000	310,000	447,000
Deferred revenue						$ 183,000	63,000	183,000	944,000
Current portion of deferred revenue							100,000
Non-current portion of deferred revenue							100,000
Advertising expenses							11,000,000	16,300,000	$ 21,200,000
Restructuring costs							2,004,000	660,000
Cash payments							1,672,000	$ 596,000
June 2023, workforce reduction plan
Subsidiary, Sale of Stock [Line Items]
Reduction in workforce, percentage				20.00%
Restructuring costs							2,000,000
Cash payments							1,600,000
Restructuring accrual							400,000
September 2022, workforce reduction plan
Subsidiary, Sale of Stock [Line Items]
Reduction in workforce, percentage					10.00%
Restructuring costs					$ 700,000
Cash Equivalents
Subsidiary, Sale of Stock [Line Items]
Payments to acquire available for sale securities							43,100,000
Letter of Credit | Astor Place, New York
Subsidiary, Sale of Stock [Line Items]
Restricted cash, non-current							3,300,000
Letter of Credit | Park Avenue South, New York
Subsidiary, Sale of Stock [Line Items]
Restricted cash, non-current							$ 200,000
Design Manager
Subsidiary, Sale of Stock [Line Items]
Joint escrow account	$ 1,500,000
IPO
Subsidiary, Sale of Stock [Line Items]
Sale of stock, number of shares sold (in shares) | shares		6,612,500
Sale of stock, price (in usd per share) | $ / shares		$ 20.00
Common stock sold, net proceeds		$ 123,000,000
Underwriters option
Subsidiary, Sale of Stock [Line Items]
Sale of stock, number of shares sold (in shares) | shares		862,500