NOTES PAYABLE, REVOLVING CREDIT FACILITY AND CAPITAL LEASES (Details - Margin Spread Based on Leverage Ratio, Debt Instrument) (Details) - Restated Agreement	Aug. 31, 2018
Pricing Level I
Debt Instrument [Line Items]
Leverage ratio, greater than	3.00
Pricing Level II
Debt Instrument [Line Items]
Leverage ratio, greater than	2.50
Leverage ratio, less than	3.00
Pricing Level III
Debt Instrument [Line Items]
Leverage ratio, greater than	2.00
Leverage ratio, less than	2.50
Pricing Level IV
Debt Instrument [Line Items]
Leverage ratio, greater than	1.50
Leverage ratio, less than	2.00
Pricing Level V
Debt Instrument [Line Items]
Leverage ratio, less than	1.50
Revolving Credit Facility \| Pricing Level I
Debt Instrument [Line Items]
Commitment fee percentage	2.75%
Unused capacity, commitment fee percentage	0.45%
Revolving Credit Facility \| Pricing Level I \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	2.75%
Revolving Credit Facility \| Pricing Level I \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Revolving Credit Facility \| Pricing Level II
Debt Instrument [Line Items]
Commitment fee percentage	2.25%
Unused capacity, commitment fee percentage	0.40%
Revolving Credit Facility \| Pricing Level II \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Revolving Credit Facility \| Pricing Level II \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
Revolving Credit Facility \| Pricing Level III
Debt Instrument [Line Items]
Commitment fee percentage	2.00%
Unused capacity, commitment fee percentage	0.35%
Revolving Credit Facility \| Pricing Level III \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Revolving Credit Facility \| Pricing Level III \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility \| Pricing Level IV
Debt Instrument [Line Items]
Commitment fee percentage	1.75%
Unused capacity, commitment fee percentage	0.30%
Revolving Credit Facility \| Pricing Level IV \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Revolving Credit Facility \| Pricing Level IV \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Revolving Credit Facility \| Pricing Level V
Debt Instrument [Line Items]
Commitment fee percentage	1.50%
Unused capacity, commitment fee percentage	0.30%
Revolving Credit Facility \| Pricing Level V \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Revolving Credit Facility \| Pricing Level V \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%

Debt Instrument, Covenant, Leverage Ratio, Maximum

No definition available.

Name:	rdnt_DebtInstrumentCovenantLeverageRatioMaximum
Namespace Prefix:	rdnt_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Liquidity Ratio Required, Minimum

+ References

No definition available.

+ Details

Name:	rdnt_DebtInstrumentCovenantLiquidityRatioRequiredMinimum
Namespace Prefix:	rdnt_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=rdnt_RestatedAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
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- Details

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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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