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PURCHASE ADVANCES, NET - Movement of allowance for doubtful accounts (Details) - Third Party [Member]	6 Months Ended		12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CNY (¥)	Jun. 30, 2019 CNY (¥)
Beginning balance	$ 35,663	¥ 248,500	¥ 452,632
Charge to expense	6,817	47,500	191,473
Less: write-off	0	0	(395,605)
Ending balance	$ 42,480	¥ 296,000	¥ 248,500

X

- Definition

Allowances for doubtful accounts in purchase advance third party with in one year as of balance sheet date.

+ References

No definition available.

+ Details

Name:	rcon_AllowanceForDoubtfulAccountsAdvancesOnInventoryPurchase
Namespace Prefix:	rcon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of direct write-downs of accounts receivable charged against the allowance to suppliers third party and related party.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of expense related to write-down of allowance for doubtful accounts in advance to suppliers third party and related party.

+ References

No definition available.

+ Details

Name:	rcon_ProvisionForDoubtfulAccountsAdvancesToInventoryPurchase
Namespace Prefix:	rcon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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