Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating Activities:
Net loss	$ (42,880)	$ (38,747)
Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities:
Depreciation	1,652	1,720
Amortization of intangible assets	226	5,203
Amortization of discounts and premiums on investments, net	(298)	444
Stock-based compensation	3,894	4,328
Deferred tax expense	79	169
Bad debt expense	0	9
Change in inventory reserves	459	(567)
Property and equipment impairment	0	432
Loss on disposal of property and equipment	0	97
Change in fair value of contingent consideration	308	(752)
Changes in operating assets and liabilities:
Accounts receivable	1,614	(8)
Inventory	(1,240)	(1,933)
Operating lease right-of-use assets	40	409
Prepaid expenses	409	189
Other current and long-term assets	340	(1,169)
Accounts payable	961	524
Accrued employee compensation and benefits	(577)	(284)
Accrued expenses and other current liabilities	(55)	0
Deferred revenue	(94)	(4)
Operating lease liabilities	(42)	(290)
Net cash and cash equivalents used in operating activities	(35,204)	(30,230)
Investing Activities:
Purchase of available-for-sale investments	(12,268)	(17,792)
Proceeds from maturities of available-for-sale investments	48,735	41,408
Purchase of property and equipment	(166)	(443)
Net cash and cash equivalents provided by investing activities	36,301	23,173
Financing Activities:
Proceeds from issuance of common stock, net of issuance costs	196	0
Taxes paid related to net share settlement of vesting of restricted stock units	(490)	(349)
Proceeds from exercise of stock options	5	18
Net cash and cash equivalents used in financing activities	(289)	(331)
Effect of exchange rate changes on cash and cash equivalents	751	239
Net increase (decrease) in cash, cash equivalents and restricted cash	1,559	(7,149)
Cash, cash equivalents and restricted cash, beginning of period	7,470	19,283
Cash, cash equivalents and restricted cash, end of period	9,029	12,134
Supplemental Disclosure for Cash Flow Information
Cash paid for leases	655	549
Cash paid for taxes	262	65
Supplemental Schedule of Non-cash Investing and Financing Activities:
Transfer of inventory to property and equipment	802	724
Lease liabilities arising from obtaining right-of-use assets	$ 417	$ 0