DEPOSIT FORFEITURE INCOME (Details)	1 Months Ended	12 Months Ended
Oct. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) item
DEPOSIT FORFEITURE INCOME
Number of occasions in which Company entered into an agreement \| item				6
Non-refundable deposits		$ 5,500,000		$ 5,500,000
Deposit forfeiture income	$ 5,500,000	$ 0	$ 0	$ 5,500,000

The carrying amount of the asset transferred to a third party to serve as a nonrefundable deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

No definition available.

Name:	rei_NonRefundableDepositsAssets
Namespace Prefix:	rei_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant