Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net loss	$ (49,926)	$ (54,014)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	47,762	50,407
Non-cash interest	19,450	5,320
Loss on extinguishment of debt		7,203
Stock-based compensation	3,435	2,265
Provision for losses on accounts receivable	4,088	3,104
Deferred income taxes	1,041	219
Change in fair value of contingent consideration	98	48
Changes in operating assets and liabilities:
Accounts receivable	10,050	(16,712)
Prepaid expenses and other assets	87	2,404
Accounts payable and accrued expenses	4,675	(8,937)
Deferred revenue	(984)	396
Net cash provided by (used in) operating activities	39,776	(8,297)
Investing activities
Acquisitions, net of cash	(3,124)	(1,950)
Purchases of property and equipment	(10,935)	(13,268)
Net cash used in investing activities	(14,059)	(15,218)
Financing activities
Recapitalization transaction		186,503
Revolving credit facility draws	29,000	54,500
Revolving credit facility repayments	(29,000)	(54,500)
Payments for capital lease obligations	(1,595)	(1,427)
Payments on long-term debt	(17,000)	(142,000)
Issuance of common stock		414
Net cash (used in) provided by financing activities	(18,595)	43,490
Effect of foreign exchange rates	672	(7)
Net increase in cash	7,794	19,968
Cash at beginning of period	43,407	23,439
Cash at end of period	51,201	43,407
Supplemental disclosure:
Cash paid for interest	32,196	42,693
Income taxes paid, net of refunds	(195)	470
Significant noncash investing and financing activities
Assumption of Pivotal Debentures		200,000
Equity issued for acquisitions		1,241
Purchases of property and equipment in accounts payable and accrued expenses on the consolidated balance sheets	$ 394	$ 129