XML 91 R74.htm IDEA: XBRL DOCUMENT v2.4.0.6

Disclosures About Fair Value Measurements (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Disclosures About Fair Value Measurements [Abstract]
Carrying value of impaired loans	$ 2,339	$ 4,806
Specific valuation allowance	477	1,586
Net fair value of impaired loans	$ 1,900	$ 3,200
Assets and liabilities considered financial instruments, percentage	90.00%
Loan held for sale account delivery dates lock period	30, 45, or 60 day lock period

X

- Definition

Assets and liabilities considered financial instruments, percentage.

+ References

No definition available.

+ Details

Name:	asrv_AssetsAndLiabilitiesConsideredFinancialInstrumentsPercentage
Namespace Prefix:	asrv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Loan held for sale account delivery dates lock period.

+ References

No definition available.

+ Details

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

X

- Definition

Net fair value of impaired loans.

+ References

No definition available.

+ Details

Name:	asrv_NetFairValueOfImpairedLoans
Namespace Prefix:	asrv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant