CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 323,510	$ 237,125
Marketable securities		167,408
Restricted cash	77,759	1,032
Trade accounts receivable, net	2,242	476
Inventories	3,688	6,347
Prepaid expenses and other current assets	4,032	3,034
Total current assets	411,231	415,422
Property, plant and equipment, net	238,117	185,174
Restricted cash		77,219
Operating right-of-use assets	1,386	1,331
Finance right-of-use assets	212	219
Intangible assets, net	6,816	7,691
Deposits and other assets	11,759	13,692
Total assets	669,521	700,748
Current liabilities
Accounts payable and accrued liabilities	27,895	24,760
Operating lease liabilities	521	438
Finance lease liabilities	28	79
Loans payable	137	159
2021 Bonds payable, net	67,780
Total current liabilities	96,361	25,436
2021 Bonds payable, net		67,223
Loans payable	54	159
Operating lease liabilities	1,376	1,450
Finance lease liabilities	199	183
Other liabilities		820
Total liabilities	97,990	95,271
Stockholders' Equity
Common stock, $0.01 par value per share; 500,000,000 shares authorized; 240,252,707 and 237,166,625 shares issued and outstanding at September 30, 2023, and December 31, 2022, respectively.	2,403	2,372
Additional paid-in capital	1,272,248	1,259,527
Accumulated other comprehensive loss		(1,040)
Accumulated deficit	(703,120)	(655,382)
Total stockholders' equity	571,531	605,477
Total liabilities and stockholders' equity	$ 669,521	$ 700,748