Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 85,869	$ 69,767
Short-term investments	80,273	101,079
Accounts receivable, net	19,714	16,801
Inventory	21,998	21,772
Prepaid expenses and other current assets	15,445	25,477
Total current assets	223,299	234,896
Property and equipment, net	54,837	45,126
Goodwill	1,998	2,428
Other intangible asset	1,133	1,153
Long-term investments	492	1,961
Other assets	16,378	9,718
Total assets	298,137	295,282
Current liabilities:
Accounts payable	13,889	11,052
Accrued expenses and other current liabilities	32,995	35,553
Financing liability — current	9,626	9,565
Midcap credit facility - current	11,667
Deferred revenue — current	2,316	1,733
Recognized loss on purchase commitments — current	11,360	9,393
Total current liabilities	81,853	67,296
Mann Group convertible note	8,829	8,829
Accrued interest - Mann Group convertible note	54	55
Financing liability — long term	94,441	94,512
Midcap credit facility	27,704	39,264
Senior convertible notes	225,761	225,397
Recognized loss on purchase commitments — long term	59,829	62,916
Operating lease liability	4,879	5,343
Deferred revenue — long term	45,659	37,684
Milestone liabilities	4,524	4,524
Total liabilities	553,533	545,820
Commitments and contingencies (Note 15)
Stockholders' deficit:
Undesignated preferred stock, $0.01 par value - 10,000,000 shares authorized; no shares issued or outstanding as of March 31, 2023 and December 31, 2022
Common stock, $0.01 par value - 400,000,000 shares authorized, 264,278,760 and 263,793,305 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	2,643	2,638
Additional paid-in capital	2,969,225	2,964,293
Accumulated deficit	(3,227,264)	(3,217,469)
Total stockholders' deficit	(255,396)	(250,538)
Total liabilities and stockholders' deficit	$ 298,137	$ 295,282