CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net loss	$ (50,160)	$ (23,597)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	15,069	6,946
Accretion of debt in interest expense	5,035	3,206
Current expected credit losses	992	912
Provision for obsolete inventory	19	2,158
Stock-based compensation	9,356	3,217
Loss on debt extinguishment	11,916	8,123
Adjustment to contingent consideration liability	0	(2,310)
Deferred income tax	(12,522)	(4,372)
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable	3,189	756
Inventories	(12,377)	(9,945)
Other current assets	(7,575)	989
Other assets	(2,774)	597
Accounts payable	7,849	(655)
Accrued salaries and benefits	(2,605)	2,794
Accrued expenses	(7,418)	(627)
Customer deposits and deferred service revenue	(1,402)	(3,287)
Other long-term liabilities	(211)	706
Net cash used in operating activities	(43,619)	(14,389)
Cash flows from investing activities:
Settlement of working capital for acquisitions	0	191
Cash paid for acquisition, net of cash acquired	(374,653)	0
Capital expenditures	(928)	(692)
Capitalization of software costs	(5,471)	(6,369)
Net cash used in investing activities	(381,052)	(6,870)
Cash flows from financing activities:
Principal payments of long-term debt	(4,004)	(471)
Payments for the extinguishment of notes payable	(183,618)	(66,250)
Proceeds from common stock issuance	215,000	0
Payments for common stock issuance costs	(6,827)	0
Proceeds from debt issuance, net of original issue discount	441,385	120,000
Payments for debt issuance costs	(13,998)	(4,214)
Treasury stock acquired from employees upon vesting or forfeiture of restricted stock	(4,477)	(829)
Proceeds from exercise of stock options	819	436
Net cash provided by financing activities	444,280	48,672
Effect of exchange rate changes on cash and cash equivalents	(2)	306
Net increase in cash and cash equivalents	19,607	27,719
Cash and cash equivalents at beginning of period	180,686	28,036
Cash and equivalents at end of period	200,293	55,755
Supplemental non-cash investing and financing flow information:
Interest	6,337	1,339
Taxes, net of refunds	0	184
Master development agreement with related party (refer to Note 1)	813	0
Capitalized software recorded in accounts payable	0	295
Capital expenditures in accounts payable	88	347
Tax withholding in accrued salaries and benefits related to treasury stock acquired from employees	451	0
Common stock issued for acquisition	109,740	0
Acquisition consideration recorded in accounts payable	121	0
Master development agreement expenditures with related party in accounts payable	$ 163	$ 0