Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (61,381)	$ (31,085)	$ (30,994)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,596	3,120	1,847
Impairment of goodwill and intangible assets		1,592	1,719
Reduction in carrying amount of right-of-use asset	1,056	1,045	647
Stock based compensation	7,395	1,006	544
Non-cash interest expense	111	320	259
Loss on debt extinguishment	272
Income from unconsolidated joint venture	(41)
Donation of common stock	2,226
Unrealized loss on marketable securities	2,002
Inventory write off		(15)	(141)
Loss (gain) on sale of property and equipment	20		(128)
Accretion of discount on short-term investments			(37)
Deferred taxes benefit	(179)	0	0
Changes in other assets and liabilities:
Accounts receivable, net	(11,117)	(2,130)	(5,505)
Inventory	293	(956)	(555)
Prepaid expenses	(4,025)	(210)	(2)
Deferred commissions	147
Other assets	317	(469)	(137)
Accounts payable	5,215	(2,350)	2,813
Accrued expenses	(12,008)	8,569	2,562
Contract liabilities	(1,625)	518	636
Lease liabilities	(845)	(1,004)	(653)
Net cash used in operating activities	(68,571)	(22,049)	(27,125)
Cash flows from investing activities:
Purchase of marketable securities	(267,467)
Proceeds from sale of marketable securities	235,000
Purchase of short-term investments		(17,711)	(28,850)
Proceeds from short-term investments		28,571	30,470
Purchases of property and equipment	(6,262)	(4,190)	(2,693)
Proceeds from life insurance	627
Proceeds from sale of property and equipment			155
Cash paid for business combinations, net of cash acquired	(174,646)		(1,432)
Net cash (used in) provided by investing activities	(212,748)	6,670	(2,350)
Cash flows from financing activities:
Proceeds from issuance of Series A-2, Series B, Series C, Series D and Series E convertible preferred stock, net of issuance costs		52,409	54,929
Repurchase of Series A-2, Series B, Series C and Series D convertible preferred stock		(12,852)
Deemed dividend to preferred stockholders		(8,801)
Proceeds from initial public offering, net of underwriters' discount	325,263
Payments in connection with initial public offering	(3,678)
Proceeds from stock options exercised	2,291	518	450
Proceeds from the exercise of warrants	40
Proceeds from term loan		4,000
Payment on line of credit, net			(500)
Repayment of term loan	(16,136)
Proceeds from other borrowings		4,783
Repayment of other borrowings		(4,783)
Payments on finance lease obligations	(12)	(13)	(164)
Net cash provided by financing activities	307,768	35,261	54,715
Effect of foreign currency translation on cash and cash equivalents	(61)	(130)
Net increase in cash and cash equivalents	26,388	19,752	25,240
Cash and cash equivalents at beginning of the year	59,874	40,122	14,882
Cash and cash equivalents at end of the year	86,262	59,874	40,122
Supplemental cash flow information:
Cash paid for interest	907	$ 1,269	1,111
Non-cash investing activity
Non-cash consideration in connection with business combination	$ 105,227		$ 2,743