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ACCOUNTS RECEIVABLE, NET - Additional Information (Details) $ in Millions			6 Months Ended
	Jun. 28, 2024 CNY (¥)	Jun. 28, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
ACCOUNTS RECEIVABLE, NET
Net recovery of provision for credit losses made for accounts receivable due from third parties				¥ 4,012,249
Provision for doubtful accounts of accounts receivable due from third parties			¥ 1,051,564
Percentage of not-collection from our customers	28.6	28.6
Amount of not-collection from our customers	¥ 8,800,000	$ 1.2

X

- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable due from third parties.

+ References

No definition available.

+ Details

Name:	rcon_AccountsReceivableDueFromThirdPartiesCreditLossExpenseReversal
Namespace Prefix:	rcon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

This element represents for amount of not collection from our customers.

+ References

No definition available.

+ Details

Name:	rcon_AmountOfNotCollectionFromOurCustomers
Namespace Prefix:	rcon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

This elements represents for percentage of not collection of receivables from our customers.

+ References

No definition available.

+ Details

Name:	rcon_PercentageOfNotCollectionFromOurCustomers
Namespace Prefix:	rcon_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of increase in allowance for credit loss on accounts receivable, from recovery.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ReceivablesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration