CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities
Net loss	$ (29,109)	$ (11,200)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,709	1,313
Amortization of intangible assets	462	506
Impairment of intangible assets		3,729
Non-cash operating lease cost	276	269
Provision for expected credit losses	(64)	14
Write-down of inventory		144
Loss on disposal of property and equipment	58
Stock-based compensation expense	1,420	1,335
Change in fair value of warrant liabilities	17,382	3,428
Amortization on investments, net	(98)	(120)
Changes in operating assets and liabilities:
Accounts receivable	1,193	(1,911)
Notes receivable	333	202
Prepaid and other current assets	625	514
Inventories	(10,763)	(5,755)
Accounts payable	5,319	103
Accrued liabilities	(1,081)	(1,326)
Deferred revenue	692	(25)
Operating lease liabilities	(283)	(277)
Other	(7)	(28)
Net cash used in operating activities	(11,936)	(9,085)
Cash flows from investing activities
Purchase of property and equipment	(83)	(133)
Purchase of investments	(11,878)	(6,115)
Investment maturities	5,000	3,000
Net cash used in investing activities	(6,961)	(3,248)
Cash flows from financing activities
Proceeds from acquisition-related deposit	10,000
Proceeds from issuance of common stock through option exercises	34	10
Proceeds from issuance of common stock under employee stock purchase plan	175	170
Net settlement of stock-based compensation awards	(425)	(83)
Payment of accrued offering costs allocable to preferred stock		(98)
Net cash provided by (used in) financing activities	9,784	(1)
Net decrease in cash and cash equivalents	(9,113)	(12,334)
Cash and cash equivalents at beginning of the period	16,263	20,621
Cash and cash equivalents at end of the period	7,150	8,287
Supplemental cash flow information
Cash paid for taxes		22
Supplemental schedule of non-cash investing and financing activities
Transfer from Inventories to Equipment under lease, net	$ 3,538	$ 3,367