XML 71 R61.htm IDEA: XBRL DOCUMENT v3.23.3

Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis - USD ($) $ in Thousands	Oct. 31, 2023	Jul. 31, 2023
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	$ 72,919	$ 69,676
Corporate Bonds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	46,476	46,439
U.S. Treasury Bills [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	12,418	11,275
Common Stock [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	8,759	3,898
Warrants [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	1,090	865
Hedge Funds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	2,318	4,984
Convertible Note Receivable [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	1,858	1,921
Equity Securities [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets		294
Level 1 [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	21,177	16,332
Level 1 [Member] | Corporate Bonds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 1 [Member] | U.S. Treasury Bills [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	12,418	11,275
Level 1 [Member] | Common Stock [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	8,759	3,898
Level 1 [Member] | Warrants [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets		865
Level 1 [Member] | Hedge Funds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 1 [Member] | Convertible Note Receivable [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 1 [Member] | Equity Securities [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets		294
Level 2 [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	46,476	46,439
Level 2 [Member] | Corporate Bonds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	46,476	46,439
Level 2 [Member] | U.S. Treasury Bills [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 2 [Member] | Common Stock [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 2 [Member] | Warrants [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 2 [Member] | Hedge Funds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 2 [Member] | Convertible Note Receivable [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 2 [Member] | Equity Securities [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 3 [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	5,266	6,905
Level 3 [Member] | Corporate Bonds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 3 [Member] | U.S. Treasury Bills [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 3 [Member] | Common Stock [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets
Level 3 [Member] | Warrants [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	1,090
Level 3 [Member] | Hedge Funds [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	2,318	4,984
Level 3 [Member] | Convertible Note Receivable [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets	$ 1,858	1,921
Level 3 [Member] | Equity Securities [Member]
Fair Value Measurements (Details) - Schedule of Assets Required to be Measured at Fair Value on a Recurring Basis [Line Items]
Assets

X

- References

No definition available.

+ Details

Name:	rfl_FairValueMeasurementsDetailsScheduleofAssetsRequiredtobeMeasuredatFairValueonaRecurringBasisLineItems
Namespace Prefix:	rfl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of assets classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-12

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(10))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

Name:	us-gaap_OtherAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_USTreasuryBillSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_HedgeFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_ConvertibleDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: