Debt Instrument, Leverage Ratio

No definition available.

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

- Definition

Debt Instrument, Periodic Payment, Percent

+ References

No definition available.

+ Details

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Namespace Prefix:	rdnt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Periodic Payment Terms, Amortization Increase

+ References

No definition available.

+ Details

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Namespace Prefix:	rdnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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CREDIT FACILITIES AND NOTES PAYABLE (Details - Senior Credit Facilities)	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2018 USD ($)
Term Loan \| SunTrust
Debt Instrument [Line Items]
Periodic payment, principal		$ 800,000
Debt periodic payment, percent of total amount		5.00%
Debt periodic payment, amortization increase		$ 400,000
First Lien Term Loans \| Term Loan \| Barclays
Debt Instrument [Line Items]
Periodic payment, principal	$ 1,800,000
Revolving Credit Facility
Debt Instrument [Line Items]
Effective interest rate	5.00%
Revolving Credit Facility \| Line of Credit \| SunTrust
Debt Instrument [Line Items]
Credit facilities available	$ 30,000,000
Revolving Credit Facility \| Line of Credit \| LIBOR \| Pricing Level V \| SunTrust
Debt Instrument [Line Items]
Basis spread on variable rate	0.13%
Revolving Credit Facility \| Amendment No. 6 First Lien Credit Agreement \| Line of Credit
Debt Instrument [Line Items]
Debt instrument, leverage ratio	3.50
Revolving Credit Facility \| Amendment No. 6 First Lien Credit Agreement \| Line of Credit \| Eurodollar Rate Spread
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Effective interest rate	0.75%
Revolving Credit Facility \| Amendment No. 6 First Lien Credit Agreement \| Line of Credit \| Eurodollar Rate Spread \| ≤ 3.00x
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Revolving Credit Facility \| Amendment No. 6 First Lien Credit Agreement \| Line of Credit \| Base Rate Spread
Debt Instrument [Line Items]
Effective interest rate	3.25%
Revolving Credit Facility \| Amendment No. 6 First Lien Credit Agreement \| Line of Credit \| Base Rate Spread \| ≤ 3.00x
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%