Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net loss	$ (14,645)	$ (5,493)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Stock-based compensation expense	2,911	2,574
Depreciation expense	651	162
Amortization expense	637	701
Change in fair value of contingent consideration	0	635
401(k) employer match in common shares	202	257
Common stock issued for consulting services	102	0
Changes in operating assets and liabilities:
Receivables	163	2,129
Unbilled receivables	(933)	756
Prepaid expenses and other current assets	351	640
Accounts payable	789	(117)
Deferred revenue	47	3,985
Leases liabilities	124	29
Other accrued liabilities	(890)	174
Net cash (used in) provided by operating activities	(10,491)	6,432
Cash flows from investing activities
Purchase of property and equipment	(255)	(827)
Net cash used in investing activities	(255)	(827)
Cash flows from financing activities
Dividends paid	(2,239)	(2,200)
Repayments of 2024 Notes	(19,994)	0
Proceeds from warrant exercise	0	58
Proceeds from options exercise	0	726
Finance lease obligations	(84)	(78)
Financed insurance premium payments	(750)	(740)
Payment of taxes related to net-settled stock awards	(2)	0
Net cash used in financing activities	(23,069)	(2,234)
Net change in cash and restricted cash	(33,815)	3,371
Cash and restricted cash at beginning of period	65,946	103,210
Cash and restricted cash at end of period	32,131	106,581
Supplemental disclosure of cash flow information:
Interest paid	1,181	1,820
Non-cash financing and investing activities:
Finance lease and accrued purchases of property and equipment	187	226
Common stock issued to settle contingent consideration	$ 213	$ 0