XML 80 R67.htm IDEA: XBRL DOCUMENT v3.21.1

Non-Performing Assets Including Troubled Debt Restructurings (TDR) - Loans in accrual and non-accrual status (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021 USD ($) loan	Mar. 31, 2020 loan	Dec. 31, 2020 loan
Schedule of TDRs
Number of loans		0
TDR subsequently default	0		0
Loans in non-accrual status [Member] | Commercial and Industrial | Subsequent modification of a TDR
Schedule of TDRs
Number of loans	1
Current Balance | $	$ 750
Concession Granted	Subsequent modification of a TDR - Extension of maturity date with a below market interest rate

X

- Definition

Trouble debt restructuring for non performing assets granted.

+ References

No definition available.

+ Details

Name:	asrv_TroubleDebtRestructuringForNonPerformingAssetsGrantedAbstract
Namespace Prefix:	asrv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Troubled Debt Restructuring Concession Granted.

+ References

No definition available.

+ Details

Name:	asrv_TroubledDebtRestructuringConcessionGranted
Namespace Prefix:	asrv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	asrv_TypeOfLoanAccrualStatusAxis=asrv_LoansInNonAccrualStatusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=asrv_CommercialAndIndustrialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementScenarioAxis=asrv_SubsequentModificationOfTdrMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: