CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities:
Net Loss	$ (5,390)	$ (3,287)
Reconciliation of net loss to cash used in operations:
Accretion of asset retirement obligations		106
Costs incurred for restoration and reclamation activities		(26)
Depreciation and amortization	1	13
Stock compensation expense	91
Unrealized (gain) on equity securities	(193)
Effect of changes in operating working capital items:
Increase in prepaids and other assets	(328)	(352)
Increase in payables and accrued liabilities	969	91
Net Cash Used In Operating Activities	(4,850)	(3,455)
Cash Flows From Investing Activities
Proceeds from PPP loan escrow	333
Net Cash Provided By Investing Activities	333
Cash Flows From Financing Activities:
Issuance of common stock, net	72,203	2,471
Payment of minimum withholding taxes on net share settlements of equity awards	(150)
Net Cash Provided By Financing Activities	72,053	2,471
Net increase/(decrease) in cash, cash equivalents and restricted cash	67,536	(984)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	50,325	5,667
Cash, Cash Equivalents and Restricted Cash, End of Period	$ 117,861	$ 4,683