STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Activities:
Net Income (Loss)	$ (7,751)	$ (11,121)
Reconciliation of net loss to cash used in operations:
Non-cash lease expense	128	153
Depreciation and amortization	221	146
Stock compensation expense	837	1,022
Accrued uranium royalties write-off	(1,150)
Gain on disposal of fixed assets		(1)
Effect of changes in operating working capital items:
Increase in inventory	(3,306)	(2,058)
Decrease (increase) in prepaids and other assets	130	(669)
Decrease in payables and accrued liabilities	(539)	(648)
Net Cash Used In Operating Activities	(11,430)	(13,176)
Investing Activities:
Proceeds from sale of fixed assets		1
Capital expenditures	(58,295)	(52,791)
Net Cash Used In Investing Activities	(58,295)	(52,790)
Financing Activities:
Issuance of common stock, net	5,497	25,901
Payment of minimum withholding taxes on net share settlements of equity awards	(108)	(32)
Payments on finance lease liabilities	(8)
Net Cash Provided By Financing Activities	5,381	25,869
Net decrease in Cash and Cash Equivalents	(64,344)	(40,097)
Cash and Cash Equivalents, Beginning of Period	75,196	115,293
Cash and Cash Equivalents, End of Period	10,852	75,196
Supplemental Cash Flow Information
Non-cash right-of-use asset obtained in exchange for operating lease liability	377
Non-cash right-of-use asset obtained in exchange for finance lease liability	28
Accrued capital expenditures (at end of period)	5,309	21,070
Total Supplemental Cash Flow Information	$ 5,714	$ 21,070