CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows from Operating Activities:
Net income (loss)	$ 10,040	$ (8,915)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	35,675	28,214
Amortization of deferred financing costs and discounts	1,306	1,593
Change in fair value of private placement warrants	3,734	2,067
Loss on extinguishment of debt	0	5,334
Credit loss expense	3,505	2,402
Deferred income taxes	(18,771)	281
Stock-based compensation	4,446	2,908
Other	354	133
Changes in operating assets and liabilities:
Accounts receivable, net	(14,300)	(26,672)
Unbilled receivables	(10,265)	(859)
Inventory, net	(5,722)	(691)
Prepaid expenses and other assets	8,235	429
Deferred revenue	46	(44)
Accounts payable and other current liabilities	(477)	2,374
Other liabilities	13,441	459
Net cash provided by operating activities	31,247	9,013
Cash Flows from Investing Activities:
Payment of contingent consideration	(412)	0
Purchases of installation and service parts and property and equipment	(11,478)	(3,704)
Cash proceeds from the sale of assets	25	56
Net cash used in investing activities	(11,865)	(3,648)
Cash Flows from Financing Activities:
Repayment on the revolver	(25,000)	0
Borrowings of long-term debt	0	996,750
Repayment of long-term debt	(2,255)	(865,642)
Payment of debt issuance costs	(54)	(5,732)
Payment of debt extinguishment costs	0	(604)
Proceeds from the exercise of stock options	93	0
Payment of employee tax withholding related to RSUs vesting	(1,436)	(857)
Net cash (used in) provided by financing activities	(28,652)	123,915
Effect of exchange rate changes on cash and cash equivalents	2,231	252
Net (decrease) increase in cash, cash equivalents and restricted cash	(7,039)	129,532
Cash, cash equivalents and restricted cash - beginning of period	104,432	120,892
Cash, cash equivalents and restricted cash - end of period	97,393	250,424
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
Cash and cash equivalents	93,377	249,605
Restricted cash	4,016	819
Total cash, cash equivalents, and restricted cash	97,393	250,424
Supplemental cash flow information:
Interest paid	8,188	6,996
Income taxes paid, net of refunds	1,147	238
Supplemental non-cash investing and financing activities:
Purchases of installation and service parts and property and equipment in accounts payable and accrued liabilities at period-end	4,057	1,355
Accrued debt issuance costs	0	635
Accrued debt extinguishment costs	$ 0	$ 665