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v3.23.1

Allowance for Credit Losses - Loans - Loan modifications to borrowers experiencing financial difficulty (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items] |
Amortized Cost Basis | $ 439
Unfunded loan | 0
Modified to borrowers which subsequently defaulted | 0
Other commercial and industrial |
Financing Receivable, Allowance for Credit Loss [Line Items] |
Amortized Cost Basis | $ 439
Percentage of Total Class of Loans | 0.29%
Term extension | 5 months

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- Definition Extension date expiration term on non accrual line of credit. + References No definition available. + Details
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Namespace Prefix: | asrv_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Accumulated amortized cost excluding accrued interest, of financing receivable modified for debtor experiencing financial difficulty. + References No definition available. + Details
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Namespace Prefix: | asrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage, excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables. + References No definition available. + Details
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Namespace Prefix: | asrv_
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Balance Type: | na
Period Type: | duration

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- Definition The amount of financing receivable excluding accrued interest relating subsequent default. + References No definition available. + Details
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Namespace Prefix: | asrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of financing receivable excluding accrued interest relating unfunded loan. + References No definition available. + Details
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Namespace Prefix: | asrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition 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. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Details
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Period Type: |