CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net revenue	$ 96,849	$ 102,731	$ 81,863
Cost of revenue	29,670	32,167	25,948
Gross profit	67,179	70,564	55,915
Operating expenses:
Sales and marketing	44,776	47,414	36,526
Technology development	24,437	19,110	16,510
General and administrative	27,594	21,293	12,565
Provision for transaction losses	5,933	5,191	3,820
Gain on sale of Design Manager	(9,684)	0	0
Total operating expenses	93,056	93,008	69,421
Loss from operations	(25,877)	(22,444)	(13,506)
Other income (expense), net:
Interest income	1,606	146	194
Interest expense	(11)	(16)	(14)
Other, net	1,781	1,372	809
Total other income (expense), net	3,376	1,502	989
Net loss before income taxes	(22,501)	(20,942)	(12,517)
Provision for income taxes	(37)	(21)	(11)
Net loss	(22,538)	(20,963)	(12,528)
Accretion of redeemable convertible preferred stock to redemption value	0	(7,061)	(15,095)
Net loss attributable to common stockholders, basic	(22,538)	(28,024)	(27,623)
Net loss attributable to common stockholders, diluted	$ (22,538)	$ (28,024)	$ (27,623)
Net loss per share attributable to common stockholders—basic (in usd per share)	$ (0.59)	$ (1.08)	$ (2.50)
Net loss per share attributable to common stockholders—diluted (in usd per share)	$ (0.59)	$ (1.08)	$ (2.50)
Weighted average common shares outstanding—basic (in shares)	38,479,437	26,059,744	11,034,620
Weighted average common shares outstanding—diluted (in shares)	38,479,437	26,059,744	11,034,620