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NOTE 17 - ALLOWANCE FOR DOUBTFUL ACCOUNTS - Allowance For Doubtful Accounts (Details) (USD $) - USD ($) | 12 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Receivables from equipment sales and service contracts |  |  |
Beginning Balance | $ 190,244 | $ 284,279 | $ 362,362
Additions (Included in provision for bad debts) |  |  |
Deductions |  | 94,035 | 78,083
Ending Balance | 190,244 | 190,244 | 284,279
Management fee receivable |  |  |
Beginning Balance | 12,859,750 | 13,553,005 | 12,879,149
Additions (Included in provision for bad debts) | (1,744,064) | (104,424) | 673,856
Deductions | 132,664 | 588,831 |
Ending Balance | 10,983,022 | 12,859,750 | 13,553,005
Management fee receivable from related medical practices |  |  |
Beginning Balance | 582,001 | 392,505 | 403,047
Additions (Included in provision for bad debts) | 1,129,384 | 582,001 |
Deductions |  | 392,505 | 10,542
Ending Balance | 1,711,385 | 582,001 | 392,505
Medical receivables |  |  |
Beginning Balance | 19,853,318 | 17,451,782 | 15,459,156
Additions (Included in provision for bad debts) | 17,896,528 | 16,171,434 | 14,539,786
Deductions | 15,022,148 | 12,547,160 | 12,547,160
Ending Balance | $ 22,727,698 | $ 19,853,318 | $ 17,451,782

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- Definition Allowance For Doubtful Accounts Additions + References No definition available. + Details
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Namespace Prefix: | FONR_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Allowance For Doubtful Accounts Deductions + References No definition available. + Details
Name: | FONR_AllowanceForDoubtfulAccountsDeductions
Namespace Prefix: | FONR_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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- Details
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- Details
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Data Type: | na
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- Details
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