Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Operating activities
Net loss	$ (9,580)	$ (14,856)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	7,850	9,816
Non-cash interest	4,860	4,815
Loss on debt extinguishment		7,257
Stock-based compensation	1,062	978
Provision for losses on accounts receivable	827	972
Deferred income taxes	185	342
Change in fair value of contingent consideration	9	19
Change in fair value of Private Warrants	(191)	(1,969)	$ (1,969)
Changes in operating assets and liabilities:
Accounts receivable	(6,822)	(680)
Prepaid expenses and other assets	(6,190)	(5,087)
Accounts payable and accrued expenses	5,631	(2,986)
Deferred revenue	(1,287)	(1,436)
Net cash used in operating activities	(3,646)	(2,815)
Investing activities
Purchases of property and equipment	(2,968)	(3,088)
Net cash used in investing activities	(2,968)	(3,088)
Financing activities
Proceeds for exercise of stock options		34
Payments for capital lease obligations	(531)	(285)
Debt acquisition costs		(2,031)
Proceeds long-term debt, net of original issue discount		294,000
Retirement of debt		(289,000)
Payments on long-term debt	(750)
Net cash (used in) provided by financing activities	(1,281)	2,718
Effect of foreign exchange rates	(170)	(208)
Net decrease in cash	(8,065)	(3,393)
Cash at beginning of period	46,468	51,201	51,201
Cash at end of period	38,403	47,808	$ 46,468
Supplemental disclosure:
Cash paid for interest	7,876	12,232
Net income taxes paid (refunded)	60	(591)
Significant non-cash investing and financing activities
Purchases of property and equipment in accounts payable and accrued expenses on the condensed consolidated balance sheets	$ 1	$ 682