Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 54,308	$ 124,184
Short-term investments	110,738	79,932
Accounts receivable, net	23,493	4,739
Inventory	18,273	7,152
Prepaid expenses and other current assets	11,569	3,482
Total current assets	218,381	219,489
Property and equipment, net	41,182	36,612
Goodwill	3,067
Other intangible asset	1,169
Long-term investments	12,728	56,619
Other assets	17,310	8,441
Total assets	293,837	321,161
Current liabilities:
Accounts payable	9,871	6,956
Accrued expenses and other current liabilities	30,350	27,419
Financing liability — current	9,525	6,977
Deferred revenue — current	1,786	827
Recognized loss on purchase commitments — current	8,065	6,170
Total current liabilities	59,597	48,349
Senior convertible notes	225,034	223,944
Midcap credit facility	39,155	38,833
Mann Group convertible note	8,829	18,425
Accrued interest — promissory note	56	404
Financing liability — long term	94,484	93,525
Recognized loss on purchase commitments — long term	62,173	76,659
Operating lease liability	5,666	1,040
Deferred revenue — long term	31,996	19,543
Milestone liabilities	4,524	4,838
Deposits from customer		4,950
Total liabilities	531,514	530,510
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 September 30, 2022 and December 31, 2021
Common stock, $0.01 par value - 400,000,000 shares authorized, 263,156,165 and 251,477,562 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively	2,632	2,515
Additional paid-in capital	2,960,419	2,918,205
Accumulated other comprehensive loss	(1,206)
Accumulated deficit	(3,199,522)	(3,130,069)
Total stockholders' deficit	(237,677)	(209,349)
Total liabilities and stockholders' deficit	$ 293,837	$ 321,161