XML 69 R54.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Allowance for Loan Losses (Details Textual) | 6 Months Ended
--- | ---
Jun. 30, 2017 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Individual loan balance is classified as nonaccrual status or troubled debt restructure | $ 100,000
Commercial Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Threshold for individually evaluating loans | 250,000
Pass [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Minimum individual loan balance requiring quarterly review | 1,000,000
Special Mention [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Minimum individual loan balance requiring quarterly review | 250,000
Doubtful [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Minimum individual loan balance requiring quarterly review | $ 100,000
Minimum [Member] | Commercial Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Minimum percent of portfolio to be reviewed | 50.00%
Maximum [Member] | Commercial Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Minimum percent of portfolio to be reviewed | 55.00%

X
- Definition Financing Receivable, Minimum Percent Required To Be Reviewed. + References No definition available. + Details
Name: | asrv_FinancingReceivableMinimumPercentRequiredToBeReviewed
Namespace Prefix: | asrv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Threshold Balance Which Requires Quarterly Reviews. + References No definition available. + Details
Name: | asrv_FinancingReceivableThresholdBalanceWhichRequiresQuarterlyReviews
Namespace Prefix: | asrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing Receivable, Allowance For Credit Losses, Threshold For Individually Evaluating Of Impairment. + References No definition available. + Details
Name: | asrv_FinancingReceivableThresholdForIndividuallyEvaluatingOfImpairment
Namespace Prefix: | asrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Individual loan balance is classified as nonaccrual status or troubled debt restructure. + References No definition available. + Details
Name: | asrv_IndividualLoanBalanceIsClassifiedAsNonaccrualStatusOrTroubledDebtRestructure
Namespace Prefix: | asrv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |