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RELATED PARTY TRANSACTIONS AND BALANCES - Prepaid expenses (Details)	6 Months Ended		12 Months Ended
	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 CNY (¥)
Related Party Transaction [Line Items]
Prepaid expenses related parties prepaid expenses	¥ 0	$ 0	¥ 433,000
Founders
Related Party Transaction [Line Items]
Prepaid expenses related parties prepaid expenses	0	0	363,000
Founder Family Member
Related Party Transaction [Line Items]
Prepaid expenses related parties prepaid expenses	¥ 0	$ 0	¥ 70,000

X

- Definition

The amount of Prepaid expenses related parties prepaid expenses.

+ References

No definition available.

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=rcon_FoundersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=rcon_FounderFamilyMemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: