CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net loss	$ (12,167)	$ (43,055)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	2,845	2,790
Credit losses on accounts receivable	324	581
Foreign currency losses	205
Operating lease right-of-use asset amortization	1,002	925
Stock-based compensation expense	8,095	9,013
Deferred income taxes	343
Loss on disposal of fixed assets		6
Changes in assets and liabilities:
Accounts receivable	(5,750)	3,479
Inventory	(1,181)	180
Prepaid expenses and other assets	(527)	960
Other non-current assets	(965)	2
Accounts payable	(631)	(3,220)
Accrued compensation and benefits, accrued expenses and other current liabilities	(1,326)	(4,387)
Deferred revenue	1,666	6,228
Operating lease liabilities	(730)	(3,128)
Other non-current liabilities	(72)	(9)
Net cash used in operating activities	(8,869)	(29,635)
Cash flows from investing activities:
Purchases of property and equipment	(784)	(6,454)
Proceeds from RADx grant on assets purchased		520
Net cash used in investing activities	(784)	(5,934)
Cash flows from financing activities:
Proceeds from common stock issued under stock plans	777	1,190
Payments for employee taxes on units withheld	(87)
Net cash provided by financing activities	690	1,190
Net decrease in cash, cash equivalents, and restricted cash	(8,963)	(34,379)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(163)	(776)
Cash, cash equivalents, and restricted cash at beginning of period	341,337	399,042
Cash, cash equivalents, and restricted cash at end of period	332,211	363,887
Supplemental disclosure of cash flow information:
Cash paid for taxes	502
Operating lease right-of-use assets obtained in exchange for lease liabilities		$ 22,376
Shares received in exchange for license of intellectual property (Note 3)	$ 1,000