$NWBI
Northwest Bancshares, Inc. Stock $nwbi

$nwbi Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-Q Financial Statement

#000110465913082684 Filed on November 08, 2013

Income Statement

Concept	2013 Q4	2013 Q3	2012 Q3
Revenue	$77.05M	$77.85M	$83.88M
YoY Change	-7.53%	-7.18%	-6.59%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin		$4.529M	$4.971M
YoY Change		-8.89%	-17.11%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.400M	$1.900M	$3.500M
YoY Change	4.35%	-45.71%	52.17%
% of Gross Profit
Operating Expenses		$4.529M	$4.971M
YoY Change		-8.89%	-17.11%
Operating Profit
YoY Change
Interest Expense	$14.81M	$15.28M	$18.22M
YoY Change	-13.12%	-16.16%	-20.85%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$29.47M	$23.29M	$22.21M
YoY Change	31.75%	4.88%	-5.65%
Income Tax	$9.095M	$5.727M	$6.518M
% Of Pretax Income	30.87%	24.59%	29.35%
Net Earnings	$20.40M	$17.60M	$15.70M
YoY Change	25.15%	12.1%	-5.99%
Net Earnings / Revenue	26.48%	22.61%	18.72%
Basic Earnings Per Share	$0.22	$0.19	$0.17
Diluted Earnings Per Share	$0.22	$0.19	$0.17
COMMON SHARES
Basic Shares Outstanding	94.19M shares	90.76M shares	94.42M shares
Diluted Shares Outstanding		91.82M shares	94.61M shares

Balance Sheet

Concept	2013 Q4	2013 Q3	2012 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$391.9M	$415.3M	$638.1M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$146.1M	$142.5M	$135.5M
YoY Change	5.27%	5.19%	7.5%
Goodwill	$174.6M	$174.5M	$171.9M
YoY Change	0.0%	1.5%
Intangibles	$2.319M	$2.541M	$1.330M
YoY Change	-34.29%	91.05%
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$7.880B	$7.907B	$8.048B
YoY Change	-0.79%	-1.75%	0.73%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.000M	$1.000M	$1.000M
YoY Change	0.0%	0.0%	0.0%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$156.0M		$856.0M
YoY Change	-81.86%		3.26%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.000M	$1.000M	$1.000M
YoY Change	0.0%	0.0%	0.0%
LONG-TERM LIABILITIES
Long-Term Debt	$103.0M	$968.0M	$103.0M
YoY Change	0.0%	839.81%	0.0%
Other Long-Term Liabilities	$70.00M	$75.00M	$77.00M
YoY Change	12.9%	-2.6%	18.46%
Total Long-Term Liabilities	$173.0M	$1.043B	$180.0M
YoY Change	4.85%	479.44%	7.14%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.000M	$1.000M	$1.000M
Total Long-Term Liabilities	$173.0M	$1.043B	$180.0M
Total Liabilities	$6.725B	$6.770B	$6.873B
YoY Change	-1.31%	-1.5%	0.73%
SHAREHOLDERS EQUITY
Retained Earnings	$569.7M	$562.8M	$556.5M
YoY Change	3.53%	1.12%
Common Stock	$620.6M	$618.1M	$662.6M
YoY Change	1.05%	-6.71%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.155B	$1.137B	$1.176B
YoY Change
Total Liabilities & Shareholders Equity	$7.880B	$7.908B	$8.048B
YoY Change	-0.79%	-1.73%	0.73%

Cashflow Statement

Concept	2013 Q4	2013 Q3	2012 Q3
OPERATING ACTIVITIES
Net Income	$20.40M	$17.60M	$15.70M
YoY Change	25.15%	12.1%	-5.99%
Depreciation, Depletion And Amortization	$2.400M	$1.900M	$3.500M
YoY Change	4.35%	-45.71%	52.17%
Cash From Operating Activities	$26.90M	$25.30M	$31.40M
YoY Change	-22.03%	-19.43%	-19.9%
INVESTING ACTIVITIES
Capital Expenditures	-$6.700M	-$4.800M	-$3.200M
YoY Change	3.08%	50.0%	23.08%
Acquisitions
YoY Change
Other Investing Activities	-$5.900M	$24.90M	-$99.80M
YoY Change	-94.02%	-124.95%	-330.48%
Cash From Investing Activities	-$12.60M	$20.10M	-$103.1M
YoY Change	-88.01%	-119.5%	-353.94%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-37.70M	-78.40M	-12.20M
YoY Change	-67.39%	542.62%	-90.02%
NET CHANGE
Cash From Operating Activities	26.90M	25.30M	31.40M
Cash From Investing Activities	-12.60M	20.10M	-103.1M
Cash From Financing Activities	-37.70M	-78.40M	-12.20M
Net Change In Cash	-23.40M	-33.00M	-83.90M
YoY Change	-87.43%	-60.67%	97.88%
FREE CASH FLOW
Cash From Operating Activities	$26.90M	$25.30M	$31.40M
Capital Expenditures	-$6.700M	-$4.800M	-$3.200M
Free Cash Flow	$33.60M	$30.10M	$34.60M
YoY Change	-18.05%	-13.01%	-17.22%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
CY2013Q3	nwbi	Number Of Banking Locations NumberOfBankingLocations	165	branch
CY2013Q3	us-gaap	Trading Securities TradingSecurities	0	USD
CY2012Q4	us-gaap	Trading Securities TradingSecurities	0	USD
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CY2013Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2013Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
	nwbi	Number Of Reportable Business Segments NumberOfReportableBusinessSegments	2	segment
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CY2012Q3	us-gaap	Interest Expense InterestExpense	18220000	USD
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CY2012Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6915000	USD
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CY2012Q3	us-gaap	Noninterest Income NoninterestIncome	15273000	USD
CY2013Q3	us-gaap	Noninterest Expense NoninterestExpense	50277000	USD
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CY2013Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5752000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6518000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17600000	USD
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	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	236184000	USD
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	us-gaap	Interest Expense InterestExpense	46357000	USD
	us-gaap	Interest Expense InterestExpense	58159000	USD
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	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	18165000	USD
	us-gaap	Noninterest Income NoninterestIncome	45900000	USD
	us-gaap	Noninterest Income NoninterestIncome	44214000	USD
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	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20328000	USD
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	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	47235000	USD
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CY2012Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5577095000	USD
CY2012Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	125385000	USD
CY2013Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	16238000	USD
CY2012Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	16607000	USD
CY2011Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	69429000	USD
CY2012Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	86325000	USD
	nwbi	Financing Receivable Modifications Recorded Investment Additions FinancingReceivableModificationsRecordedInvestmentAdditions	11310000	USD
	nwbi	Financing Receivable Modifications Recorded Investment Additions FinancingReceivableModificationsRecordedInvestmentAdditions	33999000	USD
CY2012	nwbi	Financing Receivable Modifications Recorded Investment Additions FinancingReceivableModificationsRecordedInvestmentAdditions	56845000	USD
	nwbi	Financing Receivable Modifications Recorded Investment Net Paydowns FinancingReceivableModificationsRecordedInvestmentNetPaydowns	10784000	USD
	nwbi	Financing Receivable Modifications Recorded Investment Net Paydowns FinancingReceivableModificationsRecordedInvestmentNetPaydowns	15762000	USD
CY2012	nwbi	Financing Receivable Modifications Recorded Investment Net Paydowns FinancingReceivableModificationsRecordedInvestmentNetPaydowns	25205000	USD
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	1769000	USD
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	554000	USD
CY2012	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	2704000	USD
	nwbi	Financing Receivable Modifications Amount Paid Off FinancingReceivableModificationsAmountPaidOff	6741000	USD
	nwbi	Financing Receivable Modifications Amount Paid Off FinancingReceivableModificationsAmountPaidOff	787000	USD
CY2012	nwbi	Financing Receivable Modifications Amount Paid Off FinancingReceivableModificationsAmountPaidOff	8921000	USD
CY2013Q3	nwbi	Financing Receivable Modifications Recorded Investment Accrual FinancingReceivableModificationsRecordedInvestmentAccrual	41871000	USD
CY2012Q3	nwbi	Financing Receivable Modifications Recorded Investment Accrual FinancingReceivableModificationsRecordedInvestmentAccrual	57064000	USD
CY2012Q4	nwbi	Financing Receivable Modifications Recorded Investment Accrual FinancingReceivableModificationsRecordedInvestmentAccrual	48278000	USD
CY2012Q3	nwbi	Financing Receivable Modifications Recorded Investment Non Accrual FinancingReceivableModificationsRecordedInvestmentNonAccrual	29261000	USD
CY2012	nwbi	Financing Receivable Modifications Recorded Investment Additions In Accordance With Recent Regulatory Guidance FinancingReceivableModificationsRecordedInvestmentAdditionsInAccordanceWithRecentRegulatoryGuidance	3000000	USD
CY2013Q3	nwbi	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	19	item
	nwbi	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	84	item
CY2013Q3	nwbi	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	1977000	USD
	nwbi	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	11310000	USD
CY2013Q3	nwbi	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1857000	USD
	nwbi	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	9195000	USD
CY2013Q3	nwbi	Financing Receivable Modification Allowance For Credit Losses FinancingReceivableModificationAllowanceForCreditLosses	280000	USD
	nwbi	Financing Receivable Modification Allowance For Credit Losses FinancingReceivableModificationAllowanceForCreditLosses	1995000	USD
CY2013Q3	nwbi	Financing Receivable Modifications That Subsequently Defaulted Number Of Contracts FinancingReceivableModificationsThatSubsequentlyDefaultedNumberOfContracts	6	item
	nwbi	Financing Receivable Modifications That Subsequently Defaulted Number Of Contracts FinancingReceivableModificationsThatSubsequentlyDefaultedNumberOfContracts	19	item
CY2013Q3	nwbi	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	804000	USD
	nwbi	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	11945000	USD
CY2013Q3	nwbi	Financing Receivable Modification That Subsequently Defaulted Pre Modification Recorded Investment FinancingReceivableModificationThatSubsequentlyDefaultedPreModificationRecordedInvestment	709000	USD
	nwbi	Financing Receivable Modification That Subsequently Defaulted Pre Modification Recorded Investment FinancingReceivableModificationThatSubsequentlyDefaultedPreModificationRecordedInvestment	3797000	USD
CY2013Q3	nwbi	Increase Decrease In Financing Receivable Modifications Recorded Investment Reserve IncreaseDecreaseInFinancingReceivableModificationsRecordedInvestmentReserve	191000	USD
	nwbi	Increase Decrease In Financing Receivable Modifications Recorded Investment Reserve IncreaseDecreaseInFinancingReceivableModificationsRecordedInvestmentReserve	695000	USD
CY2012Q3	nwbi	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	79	item
	nwbi	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	102	item
CY2012Q3	nwbi	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	17448000	USD
	nwbi	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	33999000	USD
CY2012Q3	nwbi	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	16249000	USD
	nwbi	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	31542000	USD
CY2012Q3	nwbi	Financing Receivable Modification Allowance For Credit Losses FinancingReceivableModificationAllowanceForCreditLosses	1847000	USD
	nwbi	Financing Receivable Modification Allowance For Credit Losses FinancingReceivableModificationAllowanceForCreditLosses	2559000	USD
CY2012Q3	nwbi	Financing Receivable Modifications That Subsequently Defaulted Number Of Contracts FinancingReceivableModificationsThatSubsequentlyDefaultedNumberOfContracts	9	item
	nwbi	Financing Receivable Modifications That Subsequently Defaulted Number Of Contracts FinancingReceivableModificationsThatSubsequentlyDefaultedNumberOfContracts	13	item
CY2012Q3	nwbi	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	2060000	USD
	nwbi	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	3660000	USD
CY2012Q3	nwbi	Financing Receivable Modification That Subsequently Defaulted Pre Modification Recorded Investment FinancingReceivableModificationThatSubsequentlyDefaultedPreModificationRecordedInvestment	1049000	USD
	nwbi	Financing Receivable Modification That Subsequently Defaulted Pre Modification Recorded Investment FinancingReceivableModificationThatSubsequentlyDefaultedPreModificationRecordedInvestment	2493000	USD
CY2012Q3	nwbi	Increase Decrease In Financing Receivable Modifications Recorded Investment Reserve IncreaseDecreaseInFinancingReceivableModificationsRecordedInvestmentReserve	105000	USD
	nwbi	Increase Decrease In Financing Receivable Modifications Recorded Investment Reserve IncreaseDecreaseInFinancingReceivableModificationsRecordedInvestmentReserve	280000	USD
	nwbi	Financing Receivable Modifications Number Of Contracts Remodified FinancingReceivableModificationsNumberOfContractsRemodified	7	item
	nwbi	Financing Receivable Remodifications Post Modification Recorded Investment FinancingReceivableRemodificationsPostModificationRecordedInvestment	4234000	USD
CY2013Q3	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	20340000	USD
CY2012Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	61145000	USD
CY2013Q3	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	15133000	USD
CY2012Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	27948000	USD
CY2013Q3	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	93977000	USD
CY2012Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	157440000	USD
CY2013Q3	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	5637125000	USD
CY2012Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	5545040000	USD
CY2013Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	291000	USD
CY2012Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	219000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	988000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	793000	USD
CY2013Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	1210000	USD
CY2013Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	814000	USD
CY2013Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	571000	USD
CY2013Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	415000	USD
CY2013Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	259000	USD
CY2013Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	173000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	171882000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	174461000	USD
CY2013Q3	us-gaap	Goodwill Goodwill	174463000	USD
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2579000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2000	USD
CY2013Q3	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	28800000	USD
CY2013Q3	nwbi	Guarantee Obligations Maximum Exposure Collateralized GuaranteeObligationsMaximumExposureCollateralized	28100000	USD
CY2013Q3	us-gaap	Other Deferred Credits Current OtherDeferredCreditsCurrent	872000	USD
	nwbi	Guarantee Obligations Recourse Provisions Amount GuaranteeObligationsRecourseProvisionsAmount	0	USD
CY2012Q3	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	12.28
CY2013Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	90760402	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	94422878	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	90530417	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	94277362	shares
CY2013Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1063982	shares
CY2012Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	187778	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	679623	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	314040	shares
CY2013Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	91824384	shares
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	94610656	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	91210040	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	94591402	shares
	nwbi	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Financial Instruments Total Unrealized Gains Losses Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisFinancialInstrumentsTotalUnrealizedGainsLossesPeriodIncreaseDecrease	0	USD
CY2012	nwbi	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Financial Instruments Total Unrealized Gains Losses Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisFinancialInstrumentsTotalUnrealizedGainsLossesPeriodIncreaseDecrease	0	USD
CY2013Q3	nwbi	Fair Value Assets Amount Transfers Between Level1 And Level2 FairValueAssetsAmountTransfersBetweenLevel1AndLevel2	0	USD
CY2013Q3	nwbi	Fair Value Liabilities Amount Transfers Between Level1 And Level2 FairValueLiabilitiesAmountTransfersBetweenLevel1AndLevel2	0	USD
CY2013Q3	us-gaap	Assets Fair Value Disclosure Nonrecurring AssetsFairValueDisclosureNonrecurring	96378000	USD
	us-gaap	Amount Of Ineffectiveness On Net Investment Hedges AmountOfIneffectivenessOnNetInvestmentHedges	0	USD
CY2013Q3	nwbi	Number Of Business Trusts Owned NumberOfBusinessTrustsOwned	2	item
	nwbi	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-8019000	USD
CY2013Q3	nwbi	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-142000	USD
	nwbi	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	3613000	USD
CY2012Q3	nwbi	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-463000	USD
	nwbi	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-466000	USD
	nwbi	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-1280000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	546000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1911000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7553000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4893000	USD
CY2013Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	2200000	USD
	nwbi	Number Of Mortgages Under Foreclosure Lawsuit Initiated NumberOfMortgagesUnderForeclosureLawsuitInitiated	2	item
CY2013Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-19587000	USD
CY2013Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-19041000	USD
CY2012Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-20244000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-18333000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-11488000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-23226000	USD
CY2013Q3	nwbi	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	404000	USD
CY2012Q3	nwbi	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	1448000	USD
	dei	Entity Registrant Name EntityRegistrantName	Northwest Bancshares, Inc.
	dei	Entity Central Index Key EntityCentralIndexKey	0001471265
	dei	Document Type DocumentType	10-Q
	dei	Document Period End Date DocumentPeriodEndDate	2013-09-30
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	94193125	shares
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	93335000	USD
CY2012Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	88277000	USD
CY2013Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	321344000	USD
CY2012Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	362794000	USD
CY2013Q3	nwbi	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	634000	USD
CY2012Q4	nwbi	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	633000	USD
CY2013Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1092799000	USD
CY2012Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1079074000	USD
CY2013Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	125937000	USD
CY2012Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	155081000	USD
CY2013Q3	nwbi	Cash Cash Equivalents And Marketable Securities CashCashEquivalentsAndMarketableSecurities	1634049000	USD
CY2012Q4	nwbi	Cash Cash Equivalents And Marketable Securities CashCashEquivalentsAndMarketableSecurities	1685859000	USD
CY2012Q4	us-gaap	Loans Receivable Held For Sale Net LoansReceivableHeldForSaleNet	15441000	USD
CY2013Q3	us-gaap	Loans And Leases Receivable Consumer Mortgage LoansAndLeasesReceivableConsumerMortgage	2453109000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Consumer Mortgage LoansAndLeasesReceivableConsumerMortgage	2400208000	USD
CY2013Q3	us-gaap	Loans And Leases Receivable Consumer Home Equity LoansAndLeasesReceivableConsumerHomeEquity	1072388000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Consumer Home Equity LoansAndLeasesReceivableConsumerHomeEquity	1076637000	USD
CY2013Q3	us-gaap	Loans And Leases Receivable Consumer Other LoansAndLeasesReceivableConsumerOther	225978000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Consumer Other LoansAndLeasesReceivableConsumerOther	235367000	USD
CY2013Q3	us-gaap	Loans And Leases Receivable Consumer LoansAndLeasesReceivableConsumer	3751475000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Consumer LoansAndLeasesReceivableConsumer	3727653000	USD
CY2013Q3	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	1586991000	USD
CY2012Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	1585833000	USD
CY2013Q3	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	392636000	USD
CY2012Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	388994000	USD
CY2013Q3	us-gaap	Loans And Leases Receivable Commercial LoansAndLeasesReceivableCommercial	1979627000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Commercial LoansAndLeasesReceivableCommercial	1974827000	USD
CY2013Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	43716000	USD
CY2012Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	46834000	USD
CY2013Q3	us-gaap	Interest Receivable InterestReceivable	22560000	USD
CY2012Q4	us-gaap	Interest Receivable InterestReceivable	23313000	USD
CY2013Q3	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	20173000	USD
CY2012Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	26165000	USD
CY2013Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	142487000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	138824000	USD
CY2013Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	140389000	USD
CY2012Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	137044000	USD
CY2013Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2541000	USD
CY2012Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3529000	USD
CY2013Q3	us-gaap	Other Assets OtherAssets	72764000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	77310000	USD
CY2012Q4	us-gaap	Assets Assets	7942600000	USD
CY2013Q3	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	803498000	USD
CY2012Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	755429000	USD
CY2013Q3	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	854288000	USD
CY2012Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	851771000	USD
CY2013Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2348805000	USD
CY2012Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2271311000	USD
CY2013Q3	us-gaap	Time Deposits TimeDeposits	1718774000	USD
CY2012Q4	us-gaap	Time Deposits TimeDeposits	1886089000	USD
CY2013Q3	us-gaap	Deposits Deposits	5725365000	USD
CY2012Q4	us-gaap	Deposits Deposits	5764600000	USD
CY2013Q3	us-gaap	Borrowed Funds BorrowedFunds	865096000	USD
CY2013Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	562758000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	550296000	USD
CY2013Q3	nwbi	Unallocated Common Stock Held By Esop UnallocatedCommonStockHeldByESOP	23305000	USD
CY2012Q4	nwbi	Unallocated Common Stock Held By Esop UnallocatedCommonStockHeldByESOP	24525000	USD
CY2013Q3	us-gaap	Stockholders Equity StockholdersEquity	1138534000	USD
CY2012Q4	us-gaap	Borrowed Funds BorrowedFunds	860047000	USD
CY2013Q3	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	103094000	USD
CY2012Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	103094000	USD
CY2013Q3	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	14152000	USD
CY2012Q4	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	23325000	USD
CY2013Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	861000	USD
CY2012Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	888000	USD
CY2013Q3	us-gaap	Other Liabilities OtherLiabilities	61277000	USD
CY2012Q4	us-gaap	Other Liabilities OtherLiabilities	62177000	USD
CY2013Q3	us-gaap	Liabilities Liabilities	6769845000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	6814131000	USD
CY2013Q3	us-gaap	Common Stock Value CommonStockValue	942000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	937000	USD
CY2013Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	617180000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	613249000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1128469000	USD
CY2013Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7908379000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7942600000	USD
CY2013Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
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CY2013Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
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CY2013Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2013Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	94152042	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	93652960	shares
CY2013Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	94152042	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	93652960	shares
CY2013Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	71480000	USD
CY2012Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	76771000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	216440000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	231888000	USD
CY2013Q3	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	3113000	USD
CY2012Q3	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	3941000	USD
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	9862000	USD
	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	13041000	USD
CY2013Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	1030000	USD
CY2012Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	577000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	2969000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	1585000	USD
CY2013Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1912000	USD
CY2012Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2223000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	6069000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	6987000	USD
CY2012Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	638068000	USD
CY2012Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	91286000	USD
CY2012Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	546149000	USD
CY2012Q3	nwbi	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	633000	USD
CY2012Q3	us-gaap	Stockholders Equity StockholdersEquity	1175919000	USD
CY2013Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	253000	USD
CY2012Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	364000	USD
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	844000	USD
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1217000	USD
CY2013Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	7150000	USD
CY2012Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	10207000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	22368000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	34335000	USD
CY2013Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	8126000	USD
CY2012Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	8013000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	23989000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	23824000	USD
CY2013Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	62512000	USD
CY2012Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	65656000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	189827000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	196559000	USD
CY2013Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	57520000	USD
CY2012Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	58741000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	172272000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	178394000	USD
CY2012Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	340000	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	885000	USD
CY2012Q3	nwbi	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	247000	USD
	nwbi	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	554000	USD
CY2012Q3	nwbi	Net Other Than Temporary Impairments NetOtherThanTemporaryImpairments	93000	USD
	nwbi	Net Other Than Temporary Impairments NetOtherThanTemporaryImpairments	331000	USD
CY2013Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	109000	USD
CY2012Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	260000	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	229000	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	260000	USD
CY2013Q3	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	9282000	USD
CY2012Q3	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	9110000	USD
	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	27010000	USD
	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	26701000	USD
CY2013Q3	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	2380000	USD
CY2012Q3	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	2122000	USD
	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	6847000	USD
	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	6256000	USD
CY2013Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	2019000	USD
CY2012Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	1480000	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	6504000	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	4801000	USD
CY2013Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-111000	USD
CY2012Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1187000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-2526000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-2839000	USD
CY2013Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1178000	USD
CY2012Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1148000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3351000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3372000	USD
CY2013Q3	nwbi	Mortgage Banking Income MortgageBankingIncome	203000	USD
CY2012Q3	nwbi	Mortgage Banking Income MortgageBankingIncome	1484000	USD
	nwbi	Mortgage Banking Income MortgageBankingIncome	1395000	USD
	nwbi	Mortgage Banking Income MortgageBankingIncome	2804000	USD
CY2013Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1049000	USD
CY2012Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	949000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3090000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3190000	USD
CY2013Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	27629000	USD
CY2012Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	28171000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	83715000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	83425000	USD
CY2013Q3	us-gaap	Occupancy Costs OccupancyCosts	5633000	USD
CY2012Q3	us-gaap	Occupancy Costs OccupancyCosts	5498000	USD
	us-gaap	Occupancy Costs OccupancyCosts	17530000	USD
	us-gaap	Occupancy Costs OccupancyCosts	16729000	USD
CY2013Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	3497000	USD
CY2012Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	3141000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	10631000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	9805000	USD
CY2013Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6036000	USD
CY2012Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6340000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	19279000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	18541000	USD
CY2013Q3	us-gaap	Marketing Expense MarketingExpense	1032000	USD
CY2012Q3	us-gaap	Marketing Expense MarketingExpense	1830000	USD
	us-gaap	Marketing Expense MarketingExpense	5025000	USD
	us-gaap	Marketing Expense MarketingExpense	7695000	USD
CY2013Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1377000	USD
CY2012Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1305000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4239000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	4343000	USD
CY2013Q3	us-gaap	Professional Fees ProfessionalFees	1331000	USD
CY2012Q3	us-gaap	Professional Fees ProfessionalFees	1939000	USD
	us-gaap	Professional Fees ProfessionalFees	4223000	USD
	us-gaap	Professional Fees ProfessionalFees	5136000	USD
CY2013Q3	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	681000	USD
CY2012Q3	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	832000	USD
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	1880000	USD
	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	2143000	USD
CY2013Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2770000	USD
CY2012Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2528000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	7044000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	6435000	USD
CY2013Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	23352000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	22211000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	63618000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	67563000	USD
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.50
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2013Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	110000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1550000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Writedown Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForWritedownOfSecuritiesIncludedInNetIncomeNetOfTax	57000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Writedown Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForWritedownOfSecuritiesIncludedInNetIncomeNetOfTax	202000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-87000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-25000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-221000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	-215000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	23000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	1582000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-10840000	USD
	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	3792000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	294000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-102000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	2600000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-192000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-229000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-687000	USD
CY2013Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	18146000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	17604000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	73000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	998000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Write Down Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForWriteDownOfSecuritiesIncludedInNetIncomeTax	36000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Write Down Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForWriteDownOfSecuritiesIncludedInNetIncomeTax	129000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Write Down Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForWriteDownOfSecuritiesIncludedInNetIncomeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Write Down Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForWriteDownOfSecuritiesIncludedInNetIncomeTax	0	USD
CY2013Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	-55000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	-16000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	-142000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	-138000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	1400000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	-103000	USD
CY2013Q3	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-123000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-232000	USD
	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-369000	USD
	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-695000	USD
	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	813000	USD
	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	490000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	6638000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	7166000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-5665000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-16641000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4131000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	9892000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-204000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	59000	USD
	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	-331000	USD
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	3580000	USD
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	2129000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	36411000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	180319000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	52408000	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	168442000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4054000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	3531000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	103335000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	92628000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	233606000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	299414000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	202109000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	262192000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	29193000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	63583000	USD
CY2013Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	415313000	USD
	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-50229000	USD
	nwbi	Cash Paid For Interest On Deposits And Borrowings CashPaidForInterestOnDepositsAndBorrowings	58152000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	10389000	USD
	nwbi	Transfer Of Other Real Estate And Other Repossessed Personal Property TransferOfOtherRealEstateAndOtherRepossessedPersonalProperty	11667000	USD
	nwbi	Sale And Financing Of Other Real Estate Owned SaleAndFinancingOfOtherRealEstateOwned	888000	USD
	nwbi	Transfer Of Other Real Estate And Other Repossessed Personal Property TransferOfOtherRealEstateAndOtherRepossessedPersonalProperty	17141000	USD
	nwbi	Sale And Financing Of Other Real Estate Owned SaleAndFinancingOfOtherRealEstateOwned	428000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	451704000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	688297000	USD
	nwbi	Originations Of Loans Receivable Held For Investment OriginationsOfLoansReceivableHeldForInvestment	1568290000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	1371874000	USD
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-2101000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	11145000	USD
	us-gaap	Payments To Acquire Real Estate Held For Investment PaymentsToAcquireRealEstateHeldForInvestment	-343000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11804000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-168270000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	44431000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	30000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	52000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	27679000	USD
	nwbi	Increase Decrease In Advances By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancesByBorrowersForTaxesAndInsurance	-12001000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	34331000	USD
	nwbi	Purchase Of Common Stock For Employee Stock Ownership Plan PurchaseOfCommonStockForEmployeeStockOwnershipPlan	4459000	USD
	nwbi	Purchase Of Common Stock For Employee Stock Ownership Plan PurchaseOfCommonStockForEmployeeStockOwnershipPlan	2206000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5561000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1893000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-76171000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	25413000	USD
	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-36391000	USD
CY2012Q2	us-gaap	Stockholders Equity StockholdersEquity	1170004000	USD
CY2013Q2	us-gaap	Stockholders Equity StockholdersEquity	1128233000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	1154904000	USD
CY2012Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	898000	USD
CY2013Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2660000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1893000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5561000	USD
CY2012Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1088000	USD
CY2013Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1441000	USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2012Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	9811000	USD
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	11633000	USD
CY2013Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1200000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3800000	USD
CY2012Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1100000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3500000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-431000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-1293000	USD
	nwbi	Financing Receivable Modifications Recorded Investment Transfers FinancingReceivableModificationsRecordedInvestmentTransfers	2070000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-36000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-52000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3531000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4054000	USD
CY2012Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2206000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2206000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	4459000	USD
CY2012Q3	us-gaap	Dividends Cash DividendsCash	11469000	USD
CY2013Q3	us-gaap	Dividends Cash DividendsCash	11946000	USD
	us-gaap	Dividends Cash DividendsCash	34331000	USD
	us-gaap	Dividends Cash DividendsCash	33914000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1195000	USD
CY2012Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.12
CY2013Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	300000	USD
CY2013Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.13
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	3054000	USD
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-5140000	USD
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.37
CY2013Q3	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2012Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	37237000	USD
CY2012Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	276110000	USD

Files In Submission

Name	View Source	Status
0001104659-13-082684-index-headers.html	Edgar Link	pending
0001104659-13-082684-index.html	Edgar Link	pending
0001104659-13-082684.txt	Edgar Link	pending
0001104659-13-082684-xbrl.zip	Edgar Link	pending
a13-19602_110q.htm	Edgar Link	pending
a13-19602_1ex31d1.htm	Edgar Link	pending
a13-19602_1ex31d2.htm	Edgar Link	pending
a13-19602_1ex32d1.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
nwbi-20130930.xml	Edgar Link	completed
nwbi-20130930.xsd	Edgar Link	pending
nwbi-20130930_cal.xml	Edgar Link	unprocessable
nwbi-20130930_def.xml	Edgar Link	unprocessable
nwbi-20130930_lab.xml	Edgar Link	unprocessable
nwbi-20130930_pre.xml	Edgar Link	unprocessable
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$NWBI
Northwest Bancshares, Inc. Stock $nwbi

2013 Q4 Form 10-Q Financial Statement

#000110465913082684 Filed on November 08, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBI Northwest Bancshares, Inc. Stock $nwbi

2013 Q4 Form 10-Q Financial Statement

#000110465913082684 Filed on November 08, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBI
Northwest Bancshares, Inc. Stock $nwbi