Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (19,995)	$ (10,501)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,799	734
Reduction in carrying amount of right-of-use asset	1,765	266
Stock based compensation	3,456	505
Non-cash interest expense		56
Revaluation of contingent consideration	434
Income from unconsolidated joint venture	(34)
Unrealized loss on marketable securities	858
Non-cash income tax benefit	(559)
Loss on sale of property and equipment	71
Amortization of deferred costs on convertible notes	312
Deferred taxes benefit	(2)	0
Changes in other assets and liabilities:
Accounts receivable, net	(6,145)	(5,525)
Inventory	(180)	792
Prepaid expenses	567	(875)
Deferred commissions	(1,425)
Other assets	(362)	(224)
Accounts payable	(2,752)	1,856
Accrued expenses	(2,843)	1,645
Contract liabilities	2,145	1,595
Lease liabilities	(1,369)	(266)
Net cash used in operating activities	(24,259)	(9,942)
Cash flows from investing activities:
Purchase of marketable securities	(280,091)
Proceeds from sale of marketable securities	4
Purchases of property and equipment	(2,543)	(1,244)
Proceeds from sale of property and equipment	165
Net cash used in investing activities	(282,465)	(1,244)
Cash flows from financing activities:
Proceeds from stock options exercised	1,263	846
Proceeds from issuance of convertible notes	287,500
Costs incurred in connection with issuance of convertible notes	(9,301)
Payments on finance lease obligations	(2)	(3)
Net cash provided by financing activities	279,460	843
Effect of foreign currency translation on cash and cash equivalents	(29)	(19)
Net decrease in cash and cash equivalents	(27,293)	(10,362)
Cash and cash equivalents at beginning of the period	86,262	59,874
Cash and cash equivalents at end of the period	$ 58,969	49,512
Supplemental cash flow information:
Cash paid for interest		$ 326