Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating activities
Net loss	$ (60,543)	$ (49,926)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	38,018	47,762
Non-cash interest	19,060	19,450
Loss on debt extinguishment	7,257
Stock-based compensation	3,980	3,435
Provision for losses on accounts receivable	3,149	4,088
Deferred income taxes	(564)	1,041
Change in fair value of contingent consideration	(275)	98
Change in fair value of Private Warrants	(1,969)
Impairment of intangible asset	22,529
Changes in operating assets and liabilities:
Accounts receivable	(11,362)	10,050
Prepaid expenses and other assets	(5,490)	87
Accounts payable and accrued expenses	(4,573)	4,675
Deferred revenue	882	(984)
Net cash provided by operating activities	10,099	39,776
Investing activities
Acquisitions, net of cash acquired		(3,124)
Purchases of property and equipment	(12,488)	(10,935)
Net cash used in investing activities	(12,488)	(14,059)
Financing activities
Proceeds for exercise of stock options	38
Revolving credit facility draws		29,000
Revolving credit facility repayments		(29,000)
Payments for capital lease obligations	(2,518)	(1,595)
Debt issuance costs	(2,031)
Proceeds long-term debt, net of original issue discount	294,000
Retirement of debt	(289,000)
Payment on long-term debt	(2,250)	(17,000)
Net cash used in financing activities	(1,761)	(18,595)
Effect of foreign exchange rates	(583)	672
Net (decrease) increase in cash	(4,733)	7,794
Cash at beginning of period	51,201	43,407
Cash at end of period	46,468	51,201
Supplemental disclosure:
Cash paid for interest	36,073	32,196
Income taxes refunded: net of payments	244	195
Significant noncash investing and financing activities
Purchases of property and equipment in accounts payable and accrued expenses on the consolidated balance sheets	$ 429	$ 394