The imputed interest rate used to determine the fair value of a litigation settlement.

No definition available.

Name:	asfi_LitigationSettlementImputedInterestRate
Namespace Prefix:	asfi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business is settled.

+ References

No definition available.

+ Details

Name:	asfi_ReceivableSettlement
Namespace Prefix:	asfi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

Name:	us-gaap_GainLossRelatedToLitigationSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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

- Definition

Interest expense (income) directly attributable to an award in settlement of litigation.

+ References

No definition available.

+ Details

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

- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

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

- Details

Name:	srt_LitigationCaseAxis=asfi_LawsuitInDelawareStateCourtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 8 - Settlements (Details Textual) - USD ($)				3 Months Ended
Note 8 - Settlements (Details Textual) - USD ($)	Jul. 12, 2020	Jul. 12, 2019	Jul. 12, 2018	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019
Receivable, Settlement				$ 1,095,000		$ 1,558,000
Lawsuit in Delaware State Court [Member]
Loss Contingency, Damages Awarded, Value			$ 4,400,000
Litigation Settlement, Amount Awarded from Other Party	$ 4,400,000	$ 2,400,000
Litigation Settlement, Imputed Interest Rate			8.50%
Receivable, Settlement				1,100,000		$ 1,600,000
Gain (Loss) Related to Litigation Settlement, Total				500,000
Litigation Settlement Interest				$ 39,000	$ 68,000