Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 13,760,000	$ 29,517,000
Short-term investments	45,993,000	68,393,000
Receivables
Trade, less allowance for credit losses of $0 as of both June 30, 2025 and December 31, 2024	327,000	926,000
Other	244,000	237,000
Prepaid expenses	2,431,000	3,341,000
Total current assets	62,755,000	102,414,000
Property, plant and equipment, net	14,695,000	13,831,000
Intangible assets, net	3,818,000	4,455,000
Goodwill	15,232,000	19,139,000
Right-of-use assets	4,806,000	5,056,000
Other assets	590,000	371,000
Total assets	101,896,000	145,266,000
Current liabilities
Accounts payable	3,922,000	3,531,000
Accrued compensation and benefits	5,201,000	8,417,000
Other accrued liabilities	9,514,000	4,812,000
Indemnification accruals	3,213,000	3,213,000
Deferred revenue	413,000	589,000
Current portion of lease liabilities	930,000	956,000
Total current liabilities	23,193,000	21,518,000
Deferred revenue, net of current portion	1,818,000	1,934,000
Lease liabilities, net of current portion	4,223,000	4,546,000
Warrant liabilities	78,558,000	50,537,000
Total liabilities	107,792,000	78,535,000
Commitments and contingencies (Note 13)
Series A Preferred Stock, no par value, 81,000 shares authorized as of June 30, 2025 and December 31, 2024; 79,000 shares issued as of as June 30, 2025 and December 31, 2024 (aggregate liquidation preference of $82,160 as of June 30, 2025 and $79,000 as of December 31, 2024).	30,883,000	28,218,000
Shareholders' equity (deficit)
Common stock, no par value, 400,000,000 shares authorized as of June 30, 2025 and December 31, 2024; 297,846,160 shares and 292,869,097 shares issued and outstanding as of June 30, 2025 and December 31, 2024, respectively.	0	0
Additional paid-in capital	2,134,711,000	2,129,207,000
Accumulated deficit	(2,171,501,000)	(2,090,706,000)
Accumulated other comprehensive income	11,000	12,000
Total shareholders' (deficit) equity	(36,779,000)	38,513,000
Total liabilities, mezzanine equity and shareholders' (deficit) equity	$ 101,896,000	$ 145,266,000