XML 55 R42.htm IDEA: XBRL DOCUMENT v3.10.0.1

Revenue Recognition (Details Textual)	9 Months Ended
	Sep. 30, 2018
Revenue Associated With Financial Instruments [Member]
Percentage Of Entity Revenue	79.10%

X

- Definition

Represents the percentage of entity revenue.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=asrv_RevenueAssociatedWithFinancialInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: