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NOTE 16 - SEGMENT AND RELATED INFORMATION - (Details Narrative) | 12 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Note 16 - Segment And Related Information - |  |  |
Export Sales of medical equipment | 5.30% | 41.50% | 55.90%
Foreign Revenues of service and repair of medical equipment | 5.90% | 5.00% | 4.60%

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- Definition The Companys areas of operations are principally in the United States. + References No definition available. + Details
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Namespace Prefix: | FONR_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Foreign Revenues of service and repair of medical equipment + References No definition available. + Details
Name: | FONR_ForeignRevenuesOfServiceAndRepairOfMedicalEquipment
Namespace Prefix: | FONR_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | FONR_Note17SegmentAndRelatedInformationDetailsNarrativeAbstract
Namespace Prefix: | FONR_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration