CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
CURRENT ASSETS
Cash and cash equivalents	$ 13,992	$ 15,523
Due from related party (Note 4)	86	174
Prepaid to related party (Note 4)	1,866	2,142
Prepaid expenses and other	160	140
Total Current Assets	16,104	17,979
Equipment, net	15	15
Right of use asset (Note 5)	248	273
Investment in land (Note 7)	600	600
Total Assets	16,967	18,867
CURRENT LIABILITIES
Accounts payable and accrued liabilities	329	227
Lease liability, current (Note 5)	124	124
Total Current Liabilities	453	351
Reclamation obligation	132	132
Lease liability, long-term (Note 5)	146	168
Repurchase option (Note 7)	1,351	1,281
Total Liabilities	2,082	1,932
Commitments and Contingencies (Note 7)
SHAREHOLDERS' EQUITY:
Common shares, no par value - unlimited shares authorized; shares outstanding at March 31, 2023 and December 31, 2022 of 212,515,951	136,906	136,906
Additional paid in capital	28,845	28,673
Accumulated deficit	(150,866)	(148,644)
Total Shareholders' Equity	14,885	16,935
Total Liabilities and Shareholders' Equity	$ 16,967	$ 18,867

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

No definition available.

Name:	reemf_InvestmentInLand
Namespace Prefix:	reemf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.