CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
CURRENT ASSETS
Cash and cash equivalents	$ 21,466	$ 22,247
Restricted cash (Note 4)		2,700
Due from related party (Note 4)	347	106
Prepaid to related party (Note 4)	1,286
Prepaid expenses and other	38	75
Total Current Assets	23,137	25,128
Equipment, net	15	16
Right of use asset	347	372
Investment in land	600	600
Total Assets	24,099	26,116
CURRENT LIABILITIES
Accounts payable and accrued liabilities	277	407
Due to related party (Note 4)		712
Lease liability, current	124	124
Total Current Liabilities	401	1,243
Reclamation obligation	132	132
Lease liability, long-term	233	253
Repurchase option	1,093	1,047
Total Liabilities	1,859	2,675
Commitments and Contingencies (Note 7)
SHAREHOLDERS' EQUITY:
Common shares, no par value - unlimited shares authorized; shares outstanding at March 31, 2022 and December 31, 2021 - 212,466,889	136,906	136,906
Additional paid in capital	26,748	25,753
Accumulated deficit	(141,414)	(139,218)
Total Shareholders' Equity	22,240	23,441
Total Liabilities and Shareholders' Equity	$ 24,099	$ 26,116

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.