Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net (loss) income	$ (13,316)	$ 11,537
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation	2,260	1,288
Amortization of deferred financing costs	72	76
Amortization of right-of-use assets	1,225	357
Share based compensation expense	13,719	8,440
Allowance for credit losses, net	66	(22)
Changes in:
Accounts receivable	(6,960)	(3,470)
Inventories	(5,676)	(7,523)
Prepaid expenses, deposits and other assets	1,072	(11,306)
Accounts payable	(1,760)	7,276
Payroll-related accruals, accrued expenses and other liabilities	650	9,796
Operating lease liabilities	(544)	(381)
Lease prepayments for lessor's owned leasehold improvements	(2,969)	0
Net cash (used in) provided by operating activities	(12,161)	16,068
Cash flows from investing activities
Purchases of property and equipment	(5,864)	(6,186)
Purchases of marketable securities	(230,814)	(84,751)
Maturities of marketable securities	67,000	50,000
Purchases of other investments	(5,693)	0
Net cash used in investing activities	(175,371)	(40,937)
Cash flows from financing activities
Proceeds from issuance of common stock in public offering, net of issuance costs of $11.9 million	174,394	0
Proceeds from issuance of common stock under employee stock purchase plan	3,427	1,882
Proceeds from exercise of stock options	501	573
Payment of taxes related to vested restricted stock units	(3,375)	(755)
Net cash provided by financing activities	174,947	1,700
Effect of foreign exchange rate on cash and cash equivalents	(443)	(126)
Net decrease in cash	(13,028)	(23,295)
Cash and cash equivalents beginning of period	92,752	114,617
Cash and cash equivalents end of period	79,724	91,322
Supplemental disclosures of cash flow information:
Cash paid for income taxes	2,297	158
Cash paid for interest	$ 75	$ 76