Segment and geographic information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 153,112	$ 126,093	$ 305,335	$ 250,643
Segment cost of revenue	65,812	55,993	132,250	113,916
Gross profit	87,300	70,100	173,085	136,727
Reconciliation of segment gross profit to gross profit
Amortization of capitalized software	3,000	2,200	5,700	4,200
Amortization of intangible assets	1,000		2,100
Depreciation	1,100	1,200	2,300	2,300
Stock-based compensation	14,732	5,972	28,074	16,484
Gross profit	87,300	70,100	173,085	136,727
Operating Segments
Segment Reporting Information [Line Items]
Revenue	153,112	126,093	305,335	250,643
Segment cost of revenue	60,893	53,368	122,853	108,776
Gross profit	92,219	72,725	182,482	141,867
Reconciliation of segment gross profit to gross profit
Gross profit	92,219	72,725	182,482	141,867
Segment Reconciling Items
Segment Reporting Information [Line Items]
Gross profit	4,919	2,625	9,397	5,140
Reconciliation of segment gross profit to gross profit
Amortization of capitalized software	3,015	2,176	5,739	4,188
Amortization of intangible assets	726	0	1,450	0
Depreciation	189	212	379	415
Stock-based compensation	989	237	1,829	537
Gross profit	4,919	2,625	9,397	5,140
Consumer | Operating Segments
Segment Reporting Information [Line Items]
Revenue	78,485	83,964	165,797	171,837
Segment cost of revenue	36,211	38,913	76,008	81,363
Gross profit	42,274	45,051	89,789	90,474
Reconciliation of segment gross profit to gross profit
Gross profit	42,274	45,051	89,789	90,474
Enterprise | Operating Segments
Segment Reporting Information [Line Items]
Revenue	74,627	42,129	139,538	78,806
Segment cost of revenue	24,682	14,455	46,845	27,413
Gross profit	49,945	27,674	92,693	51,393
Reconciliation of segment gross profit to gross profit
Gross profit	$ 49,945	$ 27,674	$ 92,693	$ 51,393