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NOTE 7 - OTHER INTANGIBLE ASSETS - Schedule Of Intangle Assets - (Details) - USD ($) | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
--- | --- | --- | ---
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |
Balance - Beginning of Year | $ 6,644,504 | $ 7,719,358 | $ 8,950,160
Amounts capitalized | 108,829 | 155,156 | 113,072
Software or patents written off |  |  | (88,796)
Amortization | (1,151,677) | (1,230,010) | (1,255,078)
Balance - End of Year | $ 5,601,656 | $ 6,644,504 | $ 7,719,358

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- Definition Abandon Patents Written Off + References No definition available. + Details
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Namespace Prefix: | FONR_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amoritization Of Other Intangible Assets + References No definition available. + Details
Name: | FONR_AmoritizationOfOtherIntangibleAssets
Namespace Prefix: | FONR_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amounts Capitalized Other Intangible Assets + References No definition available. + Details
Name: | FONR_AmountsCapitalizedOtherIntangibleAssets
Namespace Prefix: | FONR_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Balance _ Beginning Of Year + References No definition available. + Details
Name: | FONR_Balance_BeginningOfYear
Namespace Prefix: | FONR_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Balance _ End Of Year + References No definition available. + Details
Name: | FONR_Balance_EndOfYear
Namespace Prefix: | FONR_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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