Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 193,272	$ 238,480
Short-term investments	107,457	56,619
Accounts receivable, net	19,912	14,901
Inventory	26,442	28,545
Prepaid expenses and other current assets	36,019	34,848
Total current assets	383,102	373,393
Property and equipment, net	83,620	84,220
Goodwill	1,931	1,931
Other intangible asset	1,053	1,073
Long-term investments	3,726	7,155
Other assets	7,447	7,426
Total assets	480,879	475,198
Current liabilities:
Accounts payable	7,149	9,580
Accrued expenses and other current liabilities	42,291	42,036
Financing liability — current	9,872	9,809
Midcap credit facility - current	20,000	20,000
Liability for sale of future royalties - current	10,537	9,756
Deferred revenue — current	7,601	9,085
Recognized loss on purchase commitments — current	2,446	3,859
Total current liabilities	99,896	104,125
Mann Group convertible note	8,829	8,829
Accrued interest - Mann Group convertible note	55	56
Financing liability — long term	94,207	94,319
Midcap credit facility - long term	8,105	13,019
Senior convertible notes	227,214	226,851
Liability for sale of future royalties - long term	137,418	136,054
Recognized loss on purchase commitments — long term	60,287	60,942
Operating lease liability	3,645	3,925
Deferred revenue — long term	67,741	69,794
Milestone liabilities	3,452	3,452
Total liabilities	710,849	721,366
Commitments and contingencies (Note 14)
Stockholders' deficit:
Undesignated preferred stock, $0.01 par value - 10,000,000 shares authorized; no shares issued or outstanding as of March 31, 2024 or December 31, 2023
Common stock, $0.01 par value - 800,000,000 shares authorized; 270,801,781 and 270,034,495 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	2,703	2,700
Additional paid-in capital	2,986,104	2,980,539
Accumulated deficit	(3,218,777)	(3,229,407)
Total stockholders' deficit	(229,970)	(246,168)	$ (255,396)	$ (250,538)
Total liabilities and stockholders' deficit	$ 480,879	$ 475,198