Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities
Net loss	$ (53,252)	$ (40,151)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	29,400	36,063
Non-cash interest	14,240	14,360
Loss on debt extinguishment	7,257
Stock-based compensation	2,998	2,552
Provision for losses on accounts receivable	2,640	3,059
Deferred income taxes	(567)	418
Change in fair value of contingent consideration	49	80
Change in fair value of Private Warrants	(1,651)
Impairment of intangible asset	22,529
Changes in operating assets and liabilities:
Accounts receivable	(16,477)	8,365
Prepaid expenses and other assets	(6,464)	(3,338)
Accounts payable and accrued expenses	(668)	4,734
Deferred revenue	(27)	(835)
Net cash provided by operating activities	7	25,307
Investing activities
Acquisitions, net of cash acquired		(3,124)
Purchases of property and equipment	(9,708)	(8,377)
Net cash used in investing activities	(9,708)	(11,501)
Financing activities
Issuance of common stock	38
Revolving credit facility - draws		29,000
Revolving credit facility - repayments		(29,000)
Payments for capital lease obligations	(846)	(688)
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	(1,500)	(12,750)
Net cash provided by (used in) financing activities	661	(13,438)
Effect of foreign exchange rates	(375)	63
Net (decrease) increase in cash	(9,415)	431
Cash at beginning of period	51,201	43,407
Cash at end of period	41,786	43,838
Supplemental disclosure:
Cash paid for interest	21,184	24,857
Income tax refunds	157	311
Significant non-cash investing and financing activities
Purchases of property and equipment in accounts payable and accrued expenses on the consolidated balance sheets	$ 297	$ 21