REVENUE (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of revenue

The components of revenue were as follows for the three months ended March 31:

(in thousands)	2021		2020
Service revenue	$	48,080	$	113,176
Reimbursable expenses	2,013		7,845
Non-controlling interests	372		423
Total	$	50,465	$	121,444

Disaggregation of revenue

Disaggregation of total revenues by major source is as follows:

(in thousands)	Revenue recognized when services are performed or assets are sold	Revenue related to technology platforms and professional services	Reimbursable expenses revenue	Total revenue
Three months ended March 31, 2021	45,251	3,201	2,013	50,465
Three months ended March 31, 2020	108,008	5,591	7,845	121,444