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LONG-TERM BORROWINGS DUE TO RELATED PARTY - Additional Information (Details) - Long-term Borrowings [Member] | 6 Months Ended |
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Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥) | Jun. 30, 2019 CNY (¥)
Collateralized amount of borrowings due to related party |  | ¥ 0 |  | ¥ 0
Interest Expense, Long-term Debt | $ 55,960 | ¥ 389,926 | ¥ 421,058 |

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- Definition The amount of borrowings collateralized which are due to related party. + References No definition available. + Details
Name: | rcon_CollateralizedAmountOfBorrowingsDueToRelatedParty
Namespace Prefix: | rcon_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Aggregate amount of interest paid or due on all long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.8) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
Name: | us-gaap_InterestExpenseLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=rcon_LongtermBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |