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v3.22.1

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY - Additional Information (Details) | Dec. 31, 2021
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VIE | Maximum |
Condensed financial information of the parent company |
Percent of consolidated net assets | 25.00%

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- Definition The parent entity's of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | rcon_OwnershipPercentageByParent
Namespace Prefix: | rcon_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- 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
Name: | srt_CondensedBalanceSheetStatementsCaptionsLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |