CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 43,981	$ 56,984
Short-term investments	51,438	57,195
Accounts receivable, net	11,345	17,730
Inventory and other deferred costs	8,767	10,474
Prepaid expenses and other current assets	4,908	4,361
Total current assets	120,439	146,744
Property and equipment, net	54,529	57,366
Operating lease right-of-use assets	17,515	17,852
Other long-term assets	2,793	3,137
Total assets	195,276	225,099
Current liabilities
Accounts payable	9,179	14,920
Accrued and other current liabilities	16,159	23,941
Contract liabilities	3,526	3,288
Short-term warrant liability	2,509	5,085
Total current liabilities	31,373	47,234
Long-term operating lease liabilities	37,434	38,321
Long-term warrant liability	2,753	4,942
Other long-term liabilities	3,022	5,161
Total liabilities	74,582	95,658
Commitments and contingencies (Note 11)
Stockholders’ equity
Common stock, $0.0001 par value - 200,000,000 shares authorized; 51,394,199 and 50,480,694 shares issued and outstanding, respectively	5	5
Additional paid-in capital	602,488	598,364
Accumulated other comprehensive loss	(125)	(222)
Accumulated deficit	(481,674)	(468,706)
Total stockholders’ equity	120,694	129,441
Total liabilities and stockholders’ equity	$ 195,276	$ 225,099