Revenue and Contract Balances - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 11,420	$ 9,475
Retail
Disaggregation of Revenue [Line Items]
Revenue	9,179	7,821
Brands
Disaggregation of Revenue [Line Items]
Revenue	2,241	1,654
Over time
Disaggregation of Revenue [Line Items]
Revenue	10,596	8,901
Over time | Retail
Disaggregation of Revenue [Line Items]
Revenue	9,179	7,815
Over time | Brands
Disaggregation of Revenue [Line Items]
Revenue	1,417	1,086
Point in time | Brands
Disaggregation of Revenue [Line Items]
Revenue	824	574
United States
Disaggregation of Revenue [Line Items]
Revenue	10,735	8,655
All other countries
Disaggregation of Revenue [Line Items]
Revenue	685	820
Advertising
Disaggregation of Revenue [Line Items]
Revenue	11,329	9,411
Other services
Disaggregation of Revenue [Line Items]
Revenue	$ 91	$ 64