Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total Revenues	$ 211,280	$ 111,283	$ 118,326
Time-and-material
Disaggregation of Revenue [Line Items]
Total Revenues	194,926	105,578	116,825
Fixed-fee
Disaggregation of Revenue [Line Items]
Total Revenues	16,354	5,705	1,501
Tech, Media and Telecom
Disaggregation of Revenue [Line Items]
Total Revenues	67,689	45,362	32,337
Retail
Disaggregation of Revenue [Line Items]
Total Revenues	61,717	33,975	67,367
Financial Service
Disaggregation of Revenue [Line Items]
Total Revenues	17,515	13,589	12,479
CPG/Manufacturing
Disaggregation of Revenue [Line Items]
Total Revenues	43,461	14,202	4,850
Other
Disaggregation of Revenue [Line Items]
Total Revenues	20,898	4,155	1,293
North America
Disaggregation of Revenue [Line Items]
Total Revenues	168,524	110,288	118,326
Europe
Disaggregation of Revenue [Line Items]
Total Revenues	42,479	995	0
Other
Disaggregation of Revenue [Line Items]
Total Revenues	$ 277	$ 0	$ 0