XML 75 R63.htm IDEA: XBRL DOCUMENT
v3.23.1

Allowance for Credit Losses - Loans - Loan modified as a TDR (Details) - Loans in non-accrual status - Commercial and industrial $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 USD ($)
Schedule of TDRs |
Number of loans | 1
Current Balance | $ 472
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 https://asc.fasb.org/extlink&oid=123577603&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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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: |