Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	$ (53,091)	$ (43,200)	$ (13,634)
Adjustments to reconcile net loss to net cash used in operations:
Depreciation and amortization	2,246	1,464	963
Impairment of property and equipment	64	882	0
Gain on disposal of property and equipment	0	0	(450)
Share-based compensation expense	15,461	15,284	1,297
Non-cash interest (income) expense	0	(10)	11
Inventory write-downs	87	48	168
Net accretion of premium on short-term investments	21	86	0
Gain on debt extinguishment	0	(692)	0
Change in:
Accounts receivable	0	0	1,079
Inventory	(168)	(1,828)	24
Other current and non-current assets	(217)	(2,552)	154
Accounts payable	(1,737)	2,520	(1,387)
Accrued liabilities	888	675	(1,550)
Deferred revenue	0	0	(21)
Contract liabilities and other current liabilities	(293)	(1,319)	(2,073)
Operating lease liabilities	(1,280)	(762)	(656)
Net cash used in operating activities	(38,019)	(29,404)	(16,075)
Cash flows from investing activities
Sales of investment securities	60,576	0	0
Purchases of investment securities	(90,158)	(32,825)	0
Advance to IBEO	(4,132)	0	0
Proceeds from Sale of Property, Plant, and Equipment	0	0	525
Purchases of property and equipment	(4,359)	(2,493)	(402)
Net cash provided by (used in) investing activities	(38,073)	(35,318)	123
Net Cash Provided by (Used in) Financing Activities [Abstract]
Principal payments under finance leases	(26)	(28)	(29)
Proceeds from long-term debt	0	0	1,571
Principal payments under long-term debt	(392)	(488)	0
Payments received on subscriptions receivable	0	6,135	0
Proceeds from stock option exercises	726	2,654	1,000
Net proceeds from issuance of common stock	13,999	122,891	24,435
Net cash provided by financing activities	14,307	131,164	26,977
Change in cash, cash equivalents, and restricted cash	(61,785)	66,442	11,025
Cash, cash equivalents, and restricted cash at beginning of period	83,739	17,297	6,272
Cash, cash equivalents, and restricted cash at end of period	21,954	83,739	17,297
Supplemental schedule of non-cash investing and financing activities
Issuance of common stock for subscriptions receivable	0	0	6,135
Property and equipment acquired under finance leases	0	0	70
Lease liabilities from obtaining right-of-use operating asset	10,184	5,097	0
Non-cash additions to property and equipment	$ 764	$ 550	$ 116