XML 52 R39.htm IDEA: XBRL DOCUMENT v3.20.2

SECURITIES AVAILABLE FOR SALE - Basis for Impairment Conclusion (Details)	9 Months Ended
	Sep. 30, 2020 security
US Government-sponsored enterprises
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	36
Available for sale securities portfolio, number of securities (security)	611
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage)	1.12%
US Government agency
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	14
Available for sale securities portfolio, number of securities (security)	166
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage)	1.18%
Private label
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	11
Available for sale securities portfolio, number of securities (security)	16
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage)	2.88%
Obligations of states and political subdivisions thereof
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	1
Available for sale securities portfolio, number of securities (security)	177
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage)	0.08%
Corporate bonds
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions (security)	13
Available for sale securities portfolio, number of securities (security)	34
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage)	3.97%

X

- Definition

Represents the aggregate unrealized losses, expressed as a percentage of the amortized cost of the securities in a continuous unrealized loss position categorized as held-to-maturity and available-for-sales securities.

+ References

No definition available.

+ Details

Name:	bhb_AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLossesPercentage
Namespace Prefix:	bhb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of securities in the entity's portfolio of available-for-sale securities.

+ References

No definition available.

+ Details

Name:	bhb_AvailableForSaleSecuritiesPortfolioNumberOfSecurities
Namespace Prefix:	bhb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
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_InvestmentHoldingsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

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_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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