Name:	afcg_LoansHeldForInvestmentAtFairValueWeightedAverageRemainingLife
Namespace Prefix:	afcg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The amount of cost for loans receivable held-for investment.

No definition available.

Name:	afcg_LoansHeldForInvestmentCost
Namespace Prefix:	afcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The principal amount of the receivable or note before consideration of the discount or premium.

No definition available.

Name:	afcg_LoansHeldForInvestmentOutstandingPrincipalAmount
Namespace Prefix:	afcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Name Accounting Standards Codification
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-Paragraph 2
-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 55
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
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-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 825
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