Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 15,364	$ 90,541
Short-term investments	69,488	67,039
Accounts receivable, net	52,049	35,499
Inventory	54,573	48,382
Prepaid expenses and other current assets	13,961	12,962
Total current assets	205,435	254,423
Property and equipment, net	22,160	23,734
Right-of-use lease assets	7,645	9,829
Other assets	15,711	17,720
Total assets	250,951	305,706
Current liabilities:
Accounts payable	3,225	3,803
Accrued clinical and manufacturing liabilities	24,468	23,716
Accrued payroll and employee liabilities	13,416	15,263
Other accrued liabilities	38,552	25,859
Current lease liabilities	2,694	2,417
Total current liabilities	82,355	71,058
Non-current lease liabilities	5,499	7,996
Non-current convertible notes payable, net	149,284	149,082
Other non-current liabilities	241
Total liabilities	237,379	228,136
Commitments and contingencies (see Note 6)
Stockholders’ equity:
Preferred stock, $0.01 par value: 2,500 shares authorized; no shares issued or outstanding at December 31, 2022 and 2021
Common stock, $0.01 par value: 150,000 shares authorized; 119,155 and 102,005 shares issued and outstanding at December 31, 2022 and 2021, respectively	1,191	1,020
Additional paid-in capital	1,807,855	1,689,987
Accumulated other comprehensive loss	(19)	(6)
Accumulated deficit	(1,795,455)	(1,613,431)
Total stockholders’ equity	13,572	77,570
Total liabilities and stockholders’ equity	$ 250,951	$ 305,706