Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 15,759	$ 17,948
Investments	12,561	48,823
Accounts receivable, net	8,313	9,319
Inventory	19,587	22,892
Prepaid expenses and other current assets	4,945	6,019
Restricted investments	24,446	35,117
Total current assets	85,611	140,118
Restricted cash	400	400
Property and equipment, net	25,279	23,345
Operating lease right-of-use assets	4,870	5,633
Finance lease right-of-use assets	3,453	3,503
Intangible assets, net	31,734	33,974
Other long-term assets	6,648	7,431
Total assets	157,995	214,404
Current liabilities:
Accounts payable	9,844	10,384
Accrued expenses	11,028	8,089
Contract liabilities	1,035	783
Operating lease liability	2,190	2,163
Finance lease liability	269	272
Purchase option liability (at fair value)	5,060	8,534
Convertible notes payable (at fair value)	29,080	69,803
Total current liabilities	58,506	100,028
Operating lease liability, net of current portion	2,755	3,590
Finance lease liability, net of current portion	3,575	3,585
Contingent consideration	10,250	10,890
Long-term contract liabilities	138	154
Total liabilities	75,224	118,247
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized at March 31, 2024 and December 31, 2023; no shares issued and outstanding at March 31, 2024 and December 31, 2023	0	0
Common stock, $0.0001 par value, 400,000,000 shares authorized at March 31, 2024 and December 31, 2023; 57,539,000 and 45,752,000 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively	6	5
Additional paid-in capital	695,411	677,337
Accumulated deficit	(612,630)	(581,208)
Accumulated other comprehensive income (loss)	(16)	23
Total stockholders’ equity	82,771	96,157
Total liabilities and stockholders’ equity	$ 157,995	$ 214,404