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NOTE 3 – ACCOUNTS RECEIVABLE, MEDICAL RECEIVABLE AND MANAGEMENT AND OTHER FEES RECEIVABLE (Details Narrative) | 12 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020
Receivables [Abstract] |  |
[custom:PercentageOfPcsNetRevenueDerivedFromNofaultAndPersonalInjuryProtectionClaims] | 65.00% | 66.00%
[custom:PercentageOfConsolidatedNetRevenueFromManagementFees] | 12.00% | 12.00%

X
- Definition Percentage of consolidated net revenue from management fees. + References No definition available. + Details
Name: | FONR_PercentageOfConsolidatedNetRevenueFromManagementFees
Namespace Prefix: | FONR_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of PCs net revenue derived from nofault and personal injury protection claims. + References No definition available. + Details
Name: | FONR_PercentageOfPcsNetRevenueDerivedFromNofaultAndPersonalInjuryProtectionClaims
Namespace Prefix: | FONR_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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