CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 270,642	$ 298,349
Restricted cash		77,248
Trade accounts receivable, net	2,488	2,623
Inventories	3,762	3,809
Prepaid expenses and other current assets	5,408	4,353
Total current assets	282,300	386,382
Property, plant and equipment, net	227,674	211,563
Restricted cash	69,913
Operating right-of-use assets	1,295	1,324
Finance right-of-use assets	208	210
Intangible assets, net	6,232	6,524
Deposits and other assets	45,949	44,319
Total assets	633,571	650,322
Current liabilities
Accounts payable and accrued liabilities	21,556	22,752
Operating lease liabilities	364	532
Finance lease liabilities	25	45
Loans payable	118	130
2021 Bonds payable, net		67,967
Total current liabilities	22,063	91,426
2021 Bonds payable, net	68,155
Loans payable		21
Operating lease liabilities	1,222	1,299
Finance lease liabilities	186	187
Total liabilities	91,626	92,933
Stockholders' Equity
Common stock, $0.01 par value per share; 500,000,000 shares authorized; 239,576,404 and 240,499,833 shares issued and outstanding at March 31, 2024, and December 31, 2023, respectively.	2,396	2,405
Additional paid-in capital	1,280,021	1,276,581
Accumulated deficit	(740,472)	(721,597)
Total stockholders' equity	541,945	557,389
Total liabilities and stockholders' equity	$ 633,571	$ 650,322