UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
OPERATING ACTIVITIES:
Net loss	$ (11,596)	$ (41,248)
Adjustments to reconcile net loss to net cash used in operating activities:
Provision for bad debt	508	6,333	$ 4,532
DEPRECIATION AND AMORTIZATION	10,769	7,560
Stock-based compensation expense	1,805	1,150
Fair value changes in embedded derivatives	602	29,627
FAIR VALUE CHANGES IN BUSINESS ACQUISITIONS CONTINGENT CONSIDERATION	11,064
Deferred income taxes	2	(3,152)
Other	50	(180)
Changes in operating assets and liabilities—net of acquisitions:
Accounts receivable and contract assets	(29,029)	(319)
Prepaid expenses and other current assets	787	(683)
Accounts payable and other accrued liabilities	3,183	(5,005)
Accrued payroll and benefits	(2,058)	(2,458)
Other assets		(603)
Net cash used in operating activities	(13,913)	(8,978)
INVESTING ACTIVITIES:
Purchases of property and equipment	(922)	(1,558)
Proprietary software development and other software costs	(204)	(102)
Cash paid for acquisitions—net of cash acquired	(6,272)
Net cash used in investing activities	(7,398)	(1,660)
FINANCING ACTIVITIES:
Proceeds from line of credit		50,453
Payments on line of credit		(37,275)
Repayment of term loan	(547)	(1,250)
Payment of contingent consideration and other purchase price obligations		(4,703)
Repayment of capital leases	(625)	(685)
Payments of deferred offering costs		(1,175)
Debt issuance costs		(127)
Proceeds from issuance of common stock for exercised stock options	2,185
Dividend payment to the Series A-2 shareholders	(4,100)
Net cash (used in) provided by financing activities	(3,087)	5,238
CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(24,398)	(5,400)
Foreign exchange impact on cash balance	158	36
Beginning of year	34,881	6,884	6,884
End of period	10,641	1,520	$ 34,881
SUPPLEMENTAL DISCLOSURES OF CASH FLOWS INFORMATION:
Cash paid for interest	2,500	1,745
Cash paid for income tax	305	64
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Accrued purchases of property and equipment	594	613
Property and equipment purchased under capital leases	670	1,493
Accretion of the redeemable series A-1 preferred stock to redeemable value		5,415
Common stock issued to acquire new businesses	2,271
Acquisitions unpaid contingent consideration	$ 67,335	4,082
Offering costs included in accounts payable and other accrued liabilities		$ 49