CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 298,349	$ 237,125
Marketable securities		167,408
Restricted cash (current)	77,248	1,032
Trade accounts receivable, net	2,623	476
Inventories	3,809	6,347
Prepaid expenses and other current assets	4,353	3,034
Total current assets	386,382	415,422
Property, plant and equipment, net	211,563	185,174
Restricted cash		77,219
Operating right-of-use assets	1,324	1,331
Finance right-of-use assets	210	219
Intangible assets, net	6,524	7,691
Deposits and other assets	44,319	13,692
Total assets	650,322	700,748
Current liabilities
Accounts payable and accrued liabilities	22,752	24,760
Operating lease liabilities	532	438
Finance lease liabilities	45	79
Loans payable	130	159
2021 Bonds payable, net	67,967	0
Total current liabilities	91,426	25,436
2021 Bonds payable, net		67,223
Loans payable	21	159
Operating lease liabilities	1,299	1,450
Finance lease liabilities	187	183
Other liabilities		820
Total liabilities	92,933	95,271
Commitments and Contingencies
Stockholders' Equity
Common stock, $0.01 par value per share; 500,000,000 shares authorized; 240,499,833 and 237,166,625 shares issued and outstanding at December 31, 2023, and December 31, 2022, respectively.	2,405	2,372
Additional paid-in capital	1,276,581	1,259,527
Accumulated other comprehensive loss		(1,040)
Accumulated deficit	(721,597)	(655,382)
Total stockholders' equity	557,389	605,477
Total liabilities and stockholders' equity	$ 650,322	$ 700,748