CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net loss	$ (16,399)	$ (8,082)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,619	1,041
Non-cash interest expense	105	106
Stock-based compensation expense	1,545	254
Deferred taxes	10	(10)
Change in fair value of contingent consideration	200	426
Change in fair value of warrant liability		1,870
Changes in operating assets and liabilities:
Accounts receivable, net	(1,870)	(120)
Prepaid expenses and other assets	(11,087)	(1,256)
Inventories, net	(2,286)	(430)
Accounts payable	2,083	702
Accrued expenses and other liabilities	7,551	772
Deferred revenue	597	323
Net cash used in operating activities	(17,932)	(4,404)
Investing activities
Purchases of property and equipment	(1,138)	(907)
Net cash used in investing activities	(1,138)	(907)
Financing activities
Proceeds from stock option exercises	55	44
Principal payments on capital leases		(48)
Principal payments on financing leases	(126)
Net cash used in in financing activities	(71)	(4)
Net decrease in cash, cash equivalents, and restricted cash	(19,141)	(5,315)
Cash, cash equivalents, and restricted cash at beginning of year	113,381	17,508
Cash, cash equivalents, and restricted cash at end of year	94,240	12,193
Supplemental disclosures of cash flow information
Cash paid for interest	638	638
Supplemental disclosures of non-cash activities
Purchases of property and equipment included in accounts payable and accrued expenses	$ 887	884
Accretion of dividends on Series B, C, and D Preferred Stock		$ 1,190