XML 113 R86.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

LOANS - Summary of TDR Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of year	$ 27,415	$ 41,990	$ 33,829
Principal payments	(6,086)	(8,547)	(3,213)
TDR status change	0	0	0
Other reductions	(4,076)	(8,713)	(4,522)
Newly identified TDRs	2,063	2,685	15,896
Balance at end of year	$ 19,316	$ 27,415	$ 41,990

X

- Definition

Represents the amount of additions of financing receivables which were newly identified as troubled debt restructurings.

+ References

No definition available.

+ Details

Name:	bhlb_FinancingReceivableTroubledDebtRestructuringAdditions
Namespace Prefix:	bhlb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the amount of other reductions which consist of transfer to other real estate owned and charge-offs to loans.

+ References

No definition available.

+ Details

Name:	bhlb_FinancingReceivableTroubledDebtRestructuringOtherReductions
Namespace Prefix:	bhlb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the amount of principal payment of financing receivables modified by troubled debt restructurings.

+ References

No definition available.

+ Details

Name:	bhlb_FinancingReceivableTroubledDebtRestructuringPrincipalPayments
Namespace Prefix:	bhlb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the amount of troubled debt restructurings status change in which troubled debt restructuring loans with a specified interest rate equal to or greater than the rate that the entity was willing to accept at the time of the restructuring for a new loan with comparable risk and the loan was on current payment status and not impaired based on the terms specified by the restructuring agreement.

+ References

No definition available.

+ Details

Name:	bhlb_FinancingReceivableTroubledDebtRestructuringStatusChange
Namespace Prefix:	bhlb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Trouble Debt Restructuring on Financing Receivables [Roll Forward]

+ References

No definition available.

+ Details

Name:	bhlb_TroubleDebtRestructuringonFinancingReceivablesRollForward
Namespace Prefix:	bhlb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

+ Details

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