Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Activities:
Net loss	$ (78,433)	$ (75,561)
Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities:
Depreciation	3,276	3,368
Amortization of intangible assets	453	7,708
Amortization of discounts and premiums on investments, net	(482)	565
Stock-based compensation	7,918	8,416
Deferred tax expense	132	318
Change in inventory reserves	324	620
Bad debt expense	0	9
Impairment of property and equipment	374	1,431
Loss on disposal of property and equipment	0	122
Change in fair value of warrant liabilities	(1,232)	(0)
Change in fair value of contingent consideration	964	(1,115)
Changes in operating assets and liabilities:
Accounts receivable	(1,178)	(1,528)
Inventories	129	(2,302)
Operating lease right-of-use assets	(206)	232
Prepaid expenses	424	(450)
Employee retention tax credit receivable	554	757
Other current and long-term assets	1,173	(2,101)
Accounts payable	574	35
Accrued employee compensation and benefits	881	4,523
Accrued expenses	365	(3,955)
Deferred revenue	233	(55)
Operating lease liabilities	130	26
Net cash and cash equivalents used in operating activities	(63,627)	(58,937)
Investing Activities:
Purchase of available-for-sale investments	(12,268)	(33,886)
Proceeds from maturities of available-for-sale investments	77,335	82,702
Purchase of property and equipment	(561)	(1,279)
Net cash and cash equivalents provided by (used in) investing activities	64,506	47,537
Financing Activities:
Proceeds from issuance of common stock, net of issuance costs	10,118	0
Taxes paid related to net share settlement of vesting of restricted stock units	(497)	(350)
Proceeds from exercise of stock options and warrants	5	18
Net cash and cash equivalents (used in) provided by financing activities	9,626	(332)
Effect of exchange rate changes on cash and cash equivalents	763	(81)
Net (decrease) increase in cash, cash equivalents and restricted cash	11,268	(11,813)
Cash, cash equivalents and restricted cash, beginning of period	7,470	19,283
Cash, cash equivalents and restricted cash, end of period	18,738	7,470
Supplemental Disclosure for Cash Flow Information
Cash paid for leases	1,475	984
Cash paid for taxes	352	165
Supplemental Schedule of Non-cash Investing and Financing Activities:
Transfer of inventories to property and equipment	2,941	2,693
Lease liabilities arising from obtaining right-of-use assets	$ 1,143	$ 577