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Principles of Consolidation (Details) (USD $) In Billions, unless otherwise specified | Mar. 31, 2015
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Principles of Consolidation [Abstract] |
Number of locations | 17 us-gaap_NumberOfStores
Trust and financial services and administers assets | $ 1.9 us-gaap_AssetsHeldInTrust

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- Details
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Namespace Prefix: | asrv_
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Balance Type: | na
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- Definition The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represents the number of stores. + References No definition available. + Details
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