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LOANS - Unamortized Net Costs and Premiums (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Unamortized net loan origination costs	$ 5,157	$ 3,603
Unamortized net premium on purchased loans	(85)	(134)
Total unamortized net costs and premiums	$ 5,072	$ 3,469

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- Definition

Loan Commitment, Unamortized Discounts (Premiums)

+ References

No definition available.

+ Details

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X

- Definition

Unamortized Loan Commitment And Origination Fees.

+ References

No definition available.

+ Details

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Namespace Prefix:	bhb_
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- References

No definition available.

+ Details

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- Definition

Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

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