$BHLB
BERKSHIRE HILLS BANCORP INC Stock $bhlb

$bhlb Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000110813423000022 Filed on November 09, 2023

Income Statement

Concept	2023 Q4	2023 Q3
Revenue	$80.04M	$107.8M
YoY Change	-32.02%	-0.49%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$10.62M
YoY Change		21.76%
% of Gross Profit
Depreciation & Amortization	$3.265M	$3.300M
YoY Change	-9.2%	-9.22%
% of Gross Profit
Operating Expenses		$10.62M
YoY Change		21.76%
Operating Profit
YoY Change
Interest Expense	$62.12M	$57.69M
YoY Change	221.98%	397.86%
% of Operating Profit
Other Income/Expense, Net		$1.232M
YoY Change		-42.8%
Pretax Income	-$5.954M	$23.29M
YoY Change	-116.66%	-1.57%
Income Tax	-$4.509M	$3.741M
% Of Pretax Income		16.07%
Net Earnings	-$1.445M	$19.55M
YoY Change	-104.74%	4.42%
Net Earnings / Revenue	-1.81%	18.13%
Basic Earnings Per Share	-$0.03	$0.45
Diluted Earnings Per Share	-$0.03	$0.45
COMMON SHARES
Basic Shares Outstanding	43.67M shares	44.01M shares
Diluted Shares Outstanding	43.10M shares	43.35M shares

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.216B
YoY Change	74.2%
Cash & Equivalents	$1.203B	$663.5M
Short-Term Investments	$13.03M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$68.92M	$70.04M
YoY Change	-19.13%	-19.31%
Goodwill
YoY Change
Intangibles	$19.66M	$20.87M
YoY Change	-19.68%	-18.99%
Long-Term Investments
YoY Change
Other Assets	$10.94M	$11.00M
YoY Change	235.52%	187.21%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$12.43B	$12.14B
YoY Change	6.58%	7.27%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$53.03M	$54.00M
YoY Change	-1.32%	-2.3%
Deferred Revenue
YoY Change
Short-Term Debt	$260.0M	$670.0M
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$53.03M	$54.00M
YoY Change	-1.32%	-2.3%
LONG-TERM LIABILITIES
Long-Term Debt	$506.6M	$130.0M
YoY Change	303.63%	3.59%
Other Long-Term Liabilities	$278.6M	$220.0M
YoY Change	8.83%	-15.68%
Total Long-Term Liabilities	$785.2M	$350.0M
YoY Change	105.81%	-9.42%
TOTAL LIABILITIES
Total Short-Term Liabilities	$53.03M	$54.00M
Total Long-Term Liabilities	$785.2M	$350.0M
Total Liabilities	$11.42B	$11.19B
YoY Change	6.63%	7.85%
SHAREHOLDERS EQUITY
Retained Earnings	-$33.14M	-$23.85M
YoY Change	-53.61%	-74.58%
Common Stock	$1.424B	$1.424B
YoY Change	-0.06%	-0.03%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.012B	$951.0M
YoY Change
Total Liabilities & Shareholders Equity	$12.43B	$12.14B
YoY Change	6.58%	7.27%

Cashflow Statement

Concept	2023 Q4	2023 Q3
OPERATING ACTIVITIES
Net Income	-$1.445M	$19.55M
YoY Change	-104.74%	4.42%
Depreciation, Depletion And Amortization	$3.265M	$3.300M
YoY Change	-9.2%	-9.22%
Cash From Operating Activities	$52.46M	$43.60M
YoY Change	49.85%	-41.03%
INVESTING ACTIVITIES
Capital Expenditures	$1.020M	$0.00
YoY Change	33.33%
Acquisitions
YoY Change
Other Investing Activities	$255.5M	-$58.90M
YoY Change	-172.96%	-1077.76%
Cash From Investing Activities	$254.4M	-$58.90M
YoY Change	-172.51%	-1077.76%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	232.9M	38.10M
YoY Change	-23.98%	-114.88%
NET CHANGE
Cash From Operating Activities	52.46M	43.60M
Cash From Investing Activities	254.4M	-58.90M
Cash From Financing Activities	232.9M	38.10M
Net Change In Cash	539.8M	22.80M
YoY Change	-5747.51%	-112.95%
FREE CASH FLOW
Cash From Operating Activities	$52.46M	$43.60M
Capital Expenditures	$1.020M	$0.00
Free Cash Flow	$51.44M	$43.60M
YoY Change	50.22%	-41.03%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q3	us-gaap	Interest Expense InterestExpense	57687000	usd
CY2022Q3	us-gaap	Interest Expense InterestExpense	11587000	usd
CY2023Q3	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	16700000	usd
CY2022Q3	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	14573000	usd
	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	49966000	usd
	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	48345000	usd
CY2023Q3	us-gaap	Revenues Revenues	107799000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1000000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	119186000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	114773000	usd
CY2022Q3	bhlb	Occupancy And Equipment OccupancyAndEquipment	8702000	usd
	bhlb	Occupancy And Equipment OccupancyAndEquipment	27165000	usd
	bhlb	Occupancy And Equipment OccupancyAndEquipment	28207000	usd
CY2023Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	10616000	usd
CY2022Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	8719000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	7234000	usd
CY2022Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	7012000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	76513000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	81677000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	23658000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3741000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4941000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	19545000	usd
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.42
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	43164000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	44700000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43347000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45034000	shares
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	19545000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	18717000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-40525000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-83073000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-2959000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-5555000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-10544000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-32146000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-65495000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-12601000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-46778000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	1014050000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	18717000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-65495000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-46778000	usd
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.12
CY2022Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	5493000	usd
CY2022Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	20249000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2023Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3578000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2066000	usd
	us-gaap	Net Income Loss NetIncomeLoss	62028000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2288000	usd
	bhlb	Change In Unamortized Net Loan Costs And Premiums ChangeInUnamortizedNetLoanCostsAndPremiums	-2557000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	7257000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	5659000	usd
	bhlb	Accretionof Purchase Accounting Entries AccretionofPurchaseAccountingEntries	-1467000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3857000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4139000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	9515000	usd
	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	-2194000	usd
	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-4954000	usd
	bhlb	Amortization Of Tax Credits AmortizationOfTaxCredits	1153000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-12401000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	88227000	usd
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	609000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	428068000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	149994000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	807000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	43384000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1130744000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1777000	usd
	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	66486000	usd
	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	70022000	usd
	bhlb	Payments To Acquired Investments I Limited Partnership Tax Credits PaymentsToAcquiredInvestmentsILimitedPartnershipTaxCredits	1443000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	730000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-922467000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-80832000	usd
	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	98032000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	17146000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	23862000	usd
	bhlb	Settlementof Derivative Contractswith Institutional Counterparties SettlementofDerivativeContractswithInstitutionalCounterparties	-145000	usd
	bhlb	Interest Paid On Deposits InterestPaidOnDeposits	98428000	usd
	us-gaap	Interest Paid Net InterestPaidNet	36165000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	7743000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-37334000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	3574000	usd
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	0	usd
CY2023Q3	us-gaap	Trading Securities TradingSecurities	6200000	usd
CY2023Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022Q3	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	41400000	usd
CY2022Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	6000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3226000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	45963000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	275360000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1204645000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	278586000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1250608000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	7987000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	128150000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	91304000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	313700000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	99291000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	441850000	usd
CY2023Q3	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Lessthan12 Months Aggregate Losses DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionLessthan12MonthsAggregateLosses	11213000	usd
CY2023Q3	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Lessthan Twelve Months Fair Value DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionLessthanTwelveMonthsFairValue	174113000	usd
CY2023Q3	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Losses DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLosses	366664000	usd
CY2023Q3	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Aggregate Losses DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses	377877000	usd
CY2023Q3	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Fair Value DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionFairValue	1692458000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	40176000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	443798000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	198391000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	938147000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	238567000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1381945000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	8958000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	187307000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	67730000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	239115000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	76688000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	426422000	usd
CY2022Q4	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Lessthan12 Months Aggregate Losses DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionLessthan12MonthsAggregateLosses	49134000	usd
CY2022Q4	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Lessthan Twelve Months Fair Value DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionLessthanTwelveMonthsFairValue	631105000	usd
CY2022Q4	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position12 Monthsor Longer Aggregate Losses DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerAggregateLosses	266121000	usd
CY2022Q4	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Twelve Monthsor Longer Fair Value DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorLongerFairValue	1177262000	usd
CY2022Q4	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Aggregate Losses DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses	315255000	usd
CY2022Q4	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Fair Value DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionFairValue	1808367000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	8984377000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	8335309000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	102792000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	96270000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	8881585000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	8239039000	usd
	bhlb	Financing Receivable Valuation Period FinancingReceivableValuationPeriod	7	q
	bhlb	Financing Receivable Forecasting Revision Period FinancingReceivableForecastingRevisionPeriod	P1Y
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	100219000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	6744000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	1315000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	-8002000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	102792000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	99021000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	7424000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	1417000	usd
CY2022Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	-2999000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	96013000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	96270000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	22365000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	4267000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	-25021000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	102792000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	106094000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	15063000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	5972000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	990000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	96013000	usd
CY2023Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	8687000	usd
CY2022Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	7043000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	300000	usd
CY2022Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	7743000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	8588000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	7043000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	399000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	700000	usd
CY2022Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	7743000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	8984377000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	8335309000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	26636000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	13700000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest90 Days Or More Past Due Still Accruing FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing	5745000	usd
CY2023Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	31114000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	21404000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest90 Days Or More Past Due Still Accruing FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing	7038000	usd
CY2022	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
CY2022	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2023#AccountingStandardsUpdate202202Member
CY2023Q3	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssets
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2023Q3	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2023Q3	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2022Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023Q3	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	17465000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	16251000	usd
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	30552000	usd
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	25857000	usd
CY2023Q3	us-gaap	Marketing Expense MarketingExpense	1552000	usd
CY2022Q3	us-gaap	Marketing Expense MarketingExpense	1290000	usd
	us-gaap	Marketing Expense MarketingExpense	4270000	usd
	us-gaap	Marketing Expense MarketingExpense	3873000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	2423000	usd
CY2022Q3	us-gaap	Professional Fees ProfessionalFees	3285000	usd
CY2023Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1905000	usd
CY2022Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	476000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	5165000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2121000	usd
CY2023Q3	bhlb	Other Real Estate Owned OtherRealEstateOwned	0	usd
CY2022Q3	bhlb	Other Real Estate Owned OtherRealEstateOwned	13000	usd
	bhlb	Other Real Estate Owned OtherRealEstateOwned	0	usd
	bhlb	Other Real Estate Owned OtherRealEstateOwned	36000	usd
CY2023Q3	us-gaap	Restructuring Charges RestructuringCharges	2607000	usd
CY2022Q3	us-gaap	Restructuring Charges RestructuringCharges	11473000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	23286000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	18717000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-21639000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-794000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-1494000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	245000	usd
CY2022Q3	us-gaap	Stockholders Equity Other StockholdersEquityOther	946000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	942562000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	973381000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	19545000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-32146000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-12601000	usd
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	7901000	usd
CY2023Q3	us-gaap	Stockholders Equity Other StockholdersEquityOther	358000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	951009000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1182435000	usd
	us-gaap	Net Income Loss NetIncomeLoss	62028000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-185251000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-123223000	usd
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	269000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5659000	usd
	us-gaap	Stockholders Equity Other StockholdersEquityOther	1621000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	942562000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	954062000	usd
	us-gaap	Net Income Loss NetIncomeLoss	71043000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-37334000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	33709000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.54
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	23862000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	17146000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	1000	usd
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5521000	usd
	us-gaap	Stockholders Equity Other StockholdersEquityOther	1675000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	951009000	usd
	us-gaap	Net Income Loss NetIncomeLoss	71043000	usd
	bhlb	Financing Receivable And Debt Securities Held To Maturity Credit Loss Expense Reversal FinancingReceivableAndDebtSecuritiesHeldToMaturityCreditLossExpenseReversal	24999000	usd
	bhlb	Financing Receivable And Debt Securities Held To Maturity Credit Loss Expense Reversal FinancingReceivableAndDebtSecuritiesHeldToMaturityCreditLossExpenseReversal	-1000000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-965000	usd
	bhlb	Change In Unamortized Net Loan Costs And Premiums ChangeInUnamortizedNetLoanCostsAndPremiums	-145000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	6404000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	5521000	usd
	bhlb	Accretionof Purchase Accounting Entries AccretionofPurchaseAccountingEntries	-503000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3615000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3910000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	7952000	usd
	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	-255000	usd
	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-1969000	usd
	bhlb	Amortization Of Tax Credits AmortizationOfTaxCredits	5959000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	3804000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	104706000	usd
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	641000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	44586000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	166552000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	440025000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	700000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	29852000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	658823000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	657000	usd
	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	449336000	usd
	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	417643000	usd
	bhlb	Payments To Acquired Investments I Limited Partnership Tax Credits PaymentsToAcquiredInvestmentsILimitedPartnershipTaxCredits	0	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	753000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	10010000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	9210150000	usd
	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	usd
CY2023Q3	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	usd
CY2022Q3	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	75000000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	104543000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	269000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	16414000	usd
	bhlb	Settlementof Derivative Contractswith Institutional Counterparties SettlementofDerivativeContractswithInstitutionalCounterparties	-88705000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-98654000	usd
	bhlb	Interest Paid On Deposits InterestPaidOnDeposits	16290000	usd
	us-gaap	Interest Paid Net InterestPaidNet	7016000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	15241000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-185251000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	8714000	usd
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	606000	usd
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:700;line-height:120%">Reclassifications</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:120%">Certain items in prior financial statements have been reclassified to conform to the current presentation.</span></div>
	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:11pt;font-weight:400;line-height:112%">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements. Actual results could differ from those estimates.</span></div>
CY2023Q3	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	6400000	usd
CY2022Q4	us-gaap	Trading Securities Debt Amortized Cost TradingSecuritiesDebtAmortizedCost	7100000	usd
CY2022Q4	us-gaap	Trading Securities TradingSecurities	6700000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1538851000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	126000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	278586000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1260391000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	552981000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	39000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	99291000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	453729000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	69000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	15035000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	0	usd
	us-gaap	Equity Securities Fv Ni Unrealized Loss EquitySecuritiesFvNiUnrealizedLoss	2710000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	12325000	usd
CY2023Q3	bhlb	Debt Securities Available For Sale And Held To Maturity And Equity Securities Fvni Amortized Cost Excluding Accrued Interest DebtSecuritiesAvailableForSaleAndHeldToMaturityAndEquitySecuritiesFVNIAmortizedCostExcludingAccruedInterest	2106867000	usd
CY2023Q3	bhlb	Debt Securities Available For Sale And Held To Maturity And Equity Securities Fvni Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesAvailableForSaleAndHeldToMaturityAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax	165000	usd
CY2023Q3	bhlb	Debt Securities Availableforsaleand Heldtomaturityand Equity Securities Fvni Accumulated Gross Unrealized Lossbefore Tax DebtSecuritiesAvailableforsaleandHeldtomaturityandEquitySecuritiesFVNIAccumulatedGrossUnrealizedLossbeforeTax	380587000	usd
CY2023Q3	bhlb	Debt Securities Available For Sale And Held To Maturity And Equity Securities Fvni Excluding Accrued Interest DebtSecuritiesAvailableForSaleAndHeldToMaturityAndEquitySecuritiesFVNIExcludingAccruedInterest	1726445000	usd
CY2023Q3	bhlb	Debt Securities Available For Sale And Held To Maturity Allowance For Credit Losses Excluding Accrued Interest DebtSecuritiesAvailableForSaleAndHeldToMaturityAllowanceForCreditLossesExcludingAccruedInterest	69000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1661196000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	571000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	238567000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1423200000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	583453000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	699000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	76688000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	507464000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	91000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	15035000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	0	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Loss EquitySecuritiesFvNiUnrealizedLoss	2179000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	12856000	usd
CY2022Q4	bhlb	Debt Securities Available For Sale And Held To Maturity And Equity Securities Fvni Amortized Cost Excluding Accrued Interest DebtSecuritiesAvailableForSaleAndHeldToMaturityAndEquitySecuritiesFVNIAmortizedCostExcludingAccruedInterest	2259684000	usd
CY2022Q4	bhlb	Debt Securities Available For Sale And Held To Maturity And Equity Securities Fvni Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesAvailableForSaleAndHeldToMaturityAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax	1270000	usd
CY2022Q4	bhlb	Debt Securities Availableforsaleand Heldtomaturityand Equity Securities Fvni Accumulated Gross Unrealized Lossbefore Tax DebtSecuritiesAvailableforsaleandHeldtomaturityandEquitySecuritiesFVNIAccumulatedGrossUnrealizedLossbeforeTax	317434000	usd
CY2022Q4	bhlb	Debt Securities Available For Sale And Held To Maturity And Equity Securities Fvni Excluding Accrued Interest DebtSecuritiesAvailableForSaleAndHeldToMaturityAndEquitySecuritiesFVNIExcludingAccruedInterest	1943520000	usd
CY2022Q4	bhlb	Debt Securities Available For Sale And Held To Maturity Allowance For Credit Losses Excluding Accrued Interest DebtSecuritiesAvailableForSaleAndHeldToMaturityAllowanceForCreditLossesExcludingAccruedInterest	91000	usd
CY2023Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	71000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	-2000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	69000	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	1000	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	95000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	8693000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	8692000	usd
CY2023Q3	us-gaap	Heldtomaturity Securities Debt Maturities Next Rolling Twelve Months Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost	822000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Next Rolling Twelve Months Fair Value HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	822000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	11291000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	11068000	usd
CY2023Q3	us-gaap	Heldtomaturity Securities Debt Maturities Rolling Year Two Through Five Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCost	1683000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Rolling Year Two Through Five Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	1667000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	54720000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	48694000	usd
CY2023Q3	us-gaap	Heldtomaturity Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCost	36012000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Rolling Year Six Through Ten Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	34653000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	42533000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	37009000	usd
CY2023Q3	us-gaap	Heldtomaturity Securities Debt Maturities Rolling After Ten Years Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesRollingAfterTenYearsAmortizedCost	219296000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Rolling After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesRollingAfterTenYearsFairValue	184571000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	117237000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	105463000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	257813000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	221713000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	1421614000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	1154928000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	295168000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	232016000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1538851000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1260391000	usd
CY2023Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	552981000	usd
CY2023Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	453729000	usd
CY2023Q3	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	7800000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	44600000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	428100000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	150000000	usd
CY2023Q3	bhlb	Debt Securities Heldto Maturityand Availablefor Sale Securities Continuous Unrealized Loss Position Twelve Monthsor Longer Fair Value DebtSecuritiesHeldtoMaturityandAvailableforSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsorLongerFairValue	1518345000	usd
CY2022Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	700000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	8987000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	8987000	usd
CY2023Q3	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	666406000	usd
CY2022Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	549265000	usd
CY2023Q3	bhlb	Time Deposits100000 Through250000 TimeDeposits100000Through250000	1158816000	usd
CY2022Q4	bhlb	Time Deposits100000 Through250000 TimeDeposits100000Through250000	642600000	usd
CY2023Q3	bhlb	Time Deposits250000or More TimeDeposits250000orMore	620213000	usd
CY2022Q4	bhlb	Time Deposits250000or More TimeDeposits250000orMore	441842000	usd
CY2023Q3	us-gaap	Time Deposits TimeDeposits	2445435000	usd
CY2022Q4	us-gaap	Time Deposits TimeDeposits	1633707000	usd
CY2023Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	670000000	usd
CY2023Q3	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0557
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	usd
CY2022Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0
CY2023Q3	us-gaap	Long Term Debt LongTermDebt	255595000	usd
CY2023Q3	us-gaap	Longterm Debt Weighted Average Interest Rate LongtermDebtWeightedAverageInterestRate	0.0492
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	125509000	usd
CY2022Q4	us-gaap	Longterm Debt Weighted Average Interest Rate LongtermDebtWeightedAverageInterestRate	0.0552
CY2023Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	925595000	usd
CY2023Q3	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0539
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	125509000	usd
CY2022Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0552
CY2023Q3	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	3000000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary By Interest Rate Type Floating Rate FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeFloatingRate	0	usd
CY2023Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary By Interest Rate Type Floating Rate FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeFloatingRate	0	usd
CY2023Q3	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	4800000000	usd
CY2022Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	4500000000	usd
CY2023Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	usd
CY2023Q3	bhlb	Derivative Securities Pledged As Collateral Amortized Cost DerivativeSecuritiesPledgedAsCollateralAmortizedCost	10000000	usd
CY2023Q3	us-gaap	Financial Instruments Owned At Fair Value FinancialInstrumentsOwnedAtFairValue	9700000	usd
CY2023Q3	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	4769166000	usd
CY2023Q3	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-52442000	usd
CY2023Q3	bhlb	Fair Value Estimates Impactof Settledto Market Contract FairValueEstimatesImpactofSettledtoMarketContract	38500000	usd
CY2022Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	4524514000	usd
CY2022Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	-43167000	usd
CY2022Q4	bhlb	Fair Value Estimates Impactof Settledto Market Contract FairValueEstimatesImpactofSettledtoMarketContract	38300000	usd
CY2023Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	48173000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	46411000	usd
CY2023Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	5727000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	6151000	usd
CY2023Q3	bhlb	Lease Rightof Use Asset LeaseRightofUseAsset	53900000	usd
CY2022Q4	bhlb	Lease Rightof Use Asset LeaseRightofUseAsset	52562000	usd
CY2023Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	54128000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	53736000	usd
CY2023Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	8831000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	9306000	usd
CY2023Q3	bhlb	Lease Liability LeaseLiability	62959000	usd
CY2022Q4	bhlb	Lease Liability LeaseLiability	63042000	usd
CY2023Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y6M
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y3M18D
CY2023Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P11Y1M6D
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P11Y9M18D
CY2023Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0285
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0256
CY2023Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0500
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0500
CY2023Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	2200000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	6900000	usd
CY2022Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	2200000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	7300000	usd
CY2023Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	2267000	usd
CY2022Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	2518000	usd
CY2023Q3	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	112000	usd
CY2022Q3	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	119000	usd
CY2023Q3	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	148000	usd
CY2022Q3	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	139000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	6800000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	7657000	usd
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	336000	usd
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	359000	usd
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	443000	usd
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	414000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	2399000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	260000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	9470000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	1039000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	8259000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1039000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7262000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1039000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6383000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1039000	usd
CY2023Q3	bhlb	Lessee Operating Lease Liabilitytobe Paid After Year Four LesseeOperatingLeaseLiabilitytobePaidAfterYearFour	26594000	usd
CY2023Q3	bhlb	Finance Lease Liabilitytobe Paid After Year Four FinanceLeaseLiabilitytobePaidAfterYearFour	7075000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	60367000	usd
CY2023Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	11491000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	6239000	usd
CY2023Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	2660000	usd
CY2023Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	54128000	usd
CY2023Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	8831000	usd
CY2023Q3	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.144
CY2022Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.146
CY2023Q3	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.080
CY2023Q3	bhlb	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.121
CY2022Q4	bhlb	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.124
CY2023Q3	us-gaap	Banking Regulation Common Equity Tier One Risk Based Capital Ratio Capital Adequacy Minimum BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum	0.045
CY2023Q3	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.123
CY2022Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.126
CY2023Q3	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.060
CY2023Q3	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.098
CY2022Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.102
CY2023Q3	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.040
CY2023Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-43484000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-11338000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-32146000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-88628000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-23133000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-65495000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-50470000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-13136000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-37334000	usd
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-250488000	usd
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-65237000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-185251000	usd
CY2023Q3	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-32263000	usd
CY2023Q3	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-117000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-32146000	usd
CY2022Q3	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-65495000	usd
CY2022Q3	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-65495000	usd
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-37680000	usd
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-346000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-37334000	usd
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-185247000	usd
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	4000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-185251000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	19545000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	18717000	usd
	us-gaap	Net Income Loss NetIncomeLoss	71043000	usd
	us-gaap	Net Income Loss NetIncomeLoss	62028000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	51903000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	51903000	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	51903000	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	51903000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	7916000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	6433000	shares
	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	7675000	shares
	us-gaap	Weighted Average Number Of Shares Treasury Stock WeightedAverageNumberOfSharesTreasuryStock	5068000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	823000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	770000	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	793000	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	779000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	43164000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	44700000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	43435000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46056000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43347000	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	45034000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43640000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	46396000	shares
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.42
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.64
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.35
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.34
	bhlb	Investment Portfolio Number Of Securities InvestmentPortfolioNumberOfSecurities	1	security
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	90334000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	92084000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	280626000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	242505000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	8000000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	24999000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1000000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	82334000	usd
CY2022Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	89084000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	255627000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	243505000	usd
CY2023Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2023Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
bhlb-20230930_cal.xml	Edgar Link	unprocessable
bhlb-20230930_lab.xml	Edgar Link	unprocessable
bhlb-20230930_def.xml	Edgar Link	unprocessable
0001108134-23-000022-index-headers.html	Edgar Link	pending
0001108134-23-000022-index.html	Edgar Link	pending
0001108134-23-000022.txt	Edgar Link	pending
0001108134-23-000022-xbrl.zip	Edgar Link	pending
bhlb-20230930.htm	Edgar Link	pending
bhlb-20230930.xsd	Edgar Link	pending
bhlb-20230930_g1.jpg	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
q32023ex311.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
bhlb-20230930_pre.xml	Edgar Link	unprocessable
bhlb-20230930_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$BHLB
BERKSHIRE HILLS BANCORP INC Stock $bhlb

2023 Q4 Form 10-Q Financial Statement

#000110813423000022 Filed on November 09, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BHLB BERKSHIRE HILLS BANCORP INC Stock $bhlb

2023 Q4 Form 10-Q Financial Statement

#000110813423000022 Filed on November 09, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BHLB
BERKSHIRE HILLS BANCORP INC Stock $bhlb