XML 82 R70.htm IDEA: XBRL DOCUMENT v3.22.0.1

INVESTMENT SECURITIES - Additional information (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) position	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
INVESTMENT SECURITIES
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	$ 66,000	$ 25,000	$ (93,000)
Investment Securities:
Proceeds from sales of investment securities - available for sale	960,000		3,374,000
Gross investment gains	84,000		$ 118,000
Book value of securities available for sale and held to maturity	$ 122,574,000	111,694,000
Number of positions | position	89
Equity securities	$ 526,000	$ 443,000
Premium percentage on mortgage backed securities purchased	101.00%
Consolidated investment securities portfolio modified, years	3 years 5 months 15 days
Number of investment		0
Realized gain on equity securities	$ 36,000	$ 2,000
Unrealized gain on equity securities	$ 7,000	$ 3,000
U.S. Agency
Investment Securities:
Available For Sale Securities Debt Maturities Weighted Average Maturity Term	8 years 6 months
Weighted Average Expected Maturity For Held To Maturity Securities	8 years 4 months 24 days
U.S. Agency mortgage-backed securities
Investment Securities:
Available For Sale Securities Debt Maturities Weighted Average Maturity Term	5 years 3 months 14 days
Weighted Average Expected Maturity For Held To Maturity Securities	5 years 3 months 29 days
Corporate bonds.
Investment Securities:
Available For Sale Securities Debt Maturities Weighted Average Maturity Term	4 years 9 months 29 days
Weighted Average Expected Maturity For Held To Maturity Securities	4 years 2 months 8 days
Municipal
Investment Securities:
Available For Sale Securities Debt Maturities Weighted Average Maturity Term	4 years 7 months 17 days
Weighted Average Expected Maturity For Held To Maturity Securities	6 years 18 days
Standard & Poor's, AAA Rating
INVESTMENT SECURITIES
Portfolio rated	47.10%	42.20%
Securities rated below A
INVESTMENT SECURITIES
Portfolio rated	14.70%	15.20%
Deferred Compensation, Share-based Payments | Assets Held With Rabbi Trust
Investment Securities:
Equity securities	$ 526,000	$ 443,000

X

- Definition

The number of investment securities positions to impaired.

+ References

No definition available.

+ Details

Name:	asrv_AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesInUnrealizedLossPositions
Namespace Prefix:	asrv_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Available For Sale Securities, Debt Maturities, Weighted Average Maturity Term

+ References

No definition available.

+ Details

Name:	asrv_AvailableForSaleSecuritiesDebtMaturitiesWeightedAverageMaturityTerm
Namespace Prefix:	asrv_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The carrying value of AFS and HTM securities pledged as collateral.

+ References

No definition available.

+ Details

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

X

- Definition

Consolidated investment securities portfolio modified, years.

+ References

No definition available.

+ Details

Name:	asrv_ConsolidatedInvestmentSecuritiesPortfolioModifiedYears
Namespace Prefix:	asrv_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Premium percentage on mortgage backed securities purchased.

+ References

No definition available.

+ Details

Name:	asrv_DebtAndEquitySecuritiesPurchasedPremiumPercentage
Namespace Prefix:	asrv_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Investment securities.

+ References

No definition available.

+ Details

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

X

- Definition

Number of investment securities sold during the period.

+ References

No definition available.

+ Details

Name:	asrv_NumberOfInvestmentSecuritiesSoldDuringPeriod
Namespace Prefix:	asrv_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of investment securities portfolio rated.

+ References

No definition available.

+ Details

Name:	asrv_PercentageOfInvestmentSecuritiesPortfolioRated
Namespace Prefix:	asrv_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of weighted average expected maturity for held to maturity securities.

+ References

No definition available.

+ Details

Name:	asrv_WeightedAverageExpectedMaturityForHeldToMaturitySecurities
Namespace Prefix:	asrv_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleRealizedGain
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

+ Details

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

X

- Definition

Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117546-209714

+ Details

Name:	us-gaap_EquitySecuritiesFvNiRealizedGain
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117546-209714

+ Details

Name:	us-gaap_EquitySecuritiesFvNiUnrealizedGain
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e689-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17A
-URI http://asc.fasb.org/extlink&oid=124509347&loc=SL34724391-108580

+ Details

Name:	us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3151-108585

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_MunicipalBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CreditRatingStandardPoorsAxis=srt_StandardPoorsAAARatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CreditRatingStandardPoorsAxis=asrv_SecuritiesRatedBelowAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_DeferredCompensationShareBasedPaymentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	asrv_RestrictedTypeAxis=asrv_AssetsHeldWithRabbiTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: