Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net loss	$ (5,493)	$ (7,595)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation expense	2,574	2,272
Paid-in-kind interest expense	0	1,453
Depreciation expense	162	23
Amortization expense	701	347
Change in fair value of warrants	0	(64)
Change in fair value of contingent consideration	635	0
401(k) employer match in common shares	257	0
Changes in operating assets and liabilities:
Receivables	2,129	633
Unbilled receivables	756	(626)
Prepaid expenses and other current assets	640	(612)
Accounts payable	(117)	349
Deferred revenue	3,985	907
Leases liabilities	29	(88)
Other accrued liabilities	174	(145)
Net cash provided by (used in) operating activities	6,432	(3,146)
Cash flows from investing activities
Purchase of property and equipment	(827)	(14)
Net cash used in investing activities	(827)	(14)
Cash flows from financing activities
Dividends paid	(2,200)	0
Proceeds from warrant exercise	58	20
Proceeds from options exercise	726	1,567
Finance lease obligations	(78)	(36)
Financed insurance premium payments	(740)	0
Net cash (used in) provided by financing activities	(2,234)	1,551
Net change in cash and restricted cash	3,371	(1,609)
Cash and restricted cash at beginning of period	103,210	14,018
Cash and restricted cash at end of period	106,581	12,409
Supplemental disclosure of cash flow information:
Interest paid	1,820	3
Non cash financing and investing activities:
Finance lease and accrued purchases of property and equipment	226	0
Stock options exercise in transit	$ 0	$ 192