$NWBI
Northwest Bancshares, Inc. Stock $nwbi

$nwbi Overview Financials Valuation SEC Filings Company Website

2014 Q1 Form 10-Q Financial Statement

#000110465914036952 Filed on May 09, 2014

Income Statement

Concept	2014 Q1	2013 Q1
Revenue	$75.33M	$79.48M
YoY Change	-5.22%	-7.62%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$5.394M	$5.168M
YoY Change	4.37%	-3.58%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.800M	$3.100M
YoY Change	-9.68%	24.0%
% of Gross Profit
Operating Expenses	$5.394M	$5.168M
YoY Change	4.37%	-3.58%
Operating Profit
YoY Change
Interest Expense	$14.20M	$15.65M
YoY Change	-9.21%	-24.94%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$19.86M	$21.54M
YoY Change	-7.83%	0.27%
Income Tax	$5.244M	$6.357M
% Of Pretax Income	26.41%	29.51%
Net Earnings	$14.60M	$15.30M
YoY Change	-4.58%	0.66%
Net Earnings / Revenue	19.38%	19.25%
Basic Earnings Per Share	$0.16	$0.17
Diluted Earnings Per Share	$0.16	$0.17
COMMON SHARES
Basic Shares Outstanding	91.15M shares	90.40M shares
Diluted Shares Outstanding	92.35M shares	90.88M shares

Balance Sheet

Concept	2014 Q1	2013 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$462.3M	$585.2M
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	$146.9M	$139.0M
YoY Change	5.71%	3.69%
Goodwill	$176.0M	$174.5M
YoY Change	0.87%
Intangibles	$4.025M	$3.181M
YoY Change	26.53%
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	$7.975B	$7.994B
YoY Change	-0.24%	-0.92%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.000M	$1.000M
YoY Change	0.0%	0.0%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt		$860.0M
YoY Change		2.87%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.000M	$1.000M
YoY Change	0.0%	0.0%
LONG-TERM LIABILITIES
Long-Term Debt	$969.0M	$103.0M
YoY Change	840.78%	0.0%
Other Long-Term Liabilities	$73.00M	$55.00M
YoY Change	32.73%	-19.12%
Total Long-Term Liabilities	$1.042B	$158.0M
YoY Change	559.49%	-7.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.000M	$1.000M
Total Long-Term Liabilities	$1.042B	$158.0M
Total Liabilities	$6.817B	$6.847B
YoY Change	-0.43%	-0.87%
SHAREHOLDERS EQUITY
Retained Earnings	$564.6M	$565.6M
YoY Change	-0.18%
Common Stock	$623.7M	$616.1M
YoY Change	1.23%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.158B	$1.148B
YoY Change
Total Liabilities & Shareholders Equity	$7.975B	$7.994B
YoY Change	-0.24%	-0.92%

Cashflow Statement

Concept	2014 Q1	2013 Q1
OPERATING ACTIVITIES
Net Income	$14.60M	$15.30M
YoY Change	-4.58%	0.66%
Depreciation, Depletion And Amortization	$2.800M	$3.100M
YoY Change	-9.68%	24.0%
Cash From Operating Activities	$27.10M	$42.20M
YoY Change	-35.78%	61.07%
INVESTING ACTIVITIES
Capital Expenditures	$3.607M	$3.284M
YoY Change	9.84%	-24.44%
Acquisitions	$2.792M
YoY Change
Other Investing Activities	-$28.50M	$54.10M
YoY Change	-152.68%	-227.0%
Cash From Investing Activities	-$32.10M	$50.80M
YoY Change	-163.19%	-208.09%
FINANCING ACTIVITIES
Cash Dividend Paid	$21.22M
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$15.00K	$17.00K
YoY Change	-11.76%	0.0%
Cash From Financing Activities	75.40M	40.40M
YoY Change	86.63%	-55.8%
NET CHANGE
Cash From Operating Activities	27.10M	42.20M
Cash From Investing Activities	-32.10M	50.80M
Cash From Financing Activities	75.40M	40.40M
Net Change In Cash	70.40M	133.4M
YoY Change	-47.23%	88.95%
FREE CASH FLOW
Cash From Operating Activities	$27.10M	$42.20M
Capital Expenditures	$3.607M	$3.284M
Free Cash Flow	$23.49M	$38.92M
YoY Change	-39.63%	78.07%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	15298000	USD
CY2014Q1	nwbi	Number Of Banking Locations NumberOfBankingLocations	165	item
CY2014Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1200000	USD
CY2013Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1100000	USD
CY2014Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2014Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0	USD
CY2014Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	item
CY2014Q1	nwbi	Number Of Consumer Finance Offices NumberOfConsumerFinanceOffices	50	item
CY2014Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	75101000	USD
CY2013Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	79633000	USD
CY2014Q1	us-gaap	Interest Expense InterestExpense	14204000	USD
CY2013Q1	us-gaap	Interest Expense InterestExpense	15645000	USD
CY2014Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7485000	USD
CY2013Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7158000	USD
CY2014Q1	us-gaap	Noninterest Income NoninterestIncome	19657000	USD
CY2013Q1	us-gaap	Noninterest Income NoninterestIncome	16378000	USD
CY2014Q1	us-gaap	Noninterest Expense NoninterestExpense	53163000	USD
CY2013Q1	us-gaap	Noninterest Expense NoninterestExpense	51471000	USD
CY2014Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5266000	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6439000	USD
CY2014Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	14640000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	229000	USD
CY2013Q1	us-gaap	Assets Assets	7994490000	USD
CY2013Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	1022078000	USD
CY2014Q1	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	1008975000	USD
CY2013Q4	nwbi	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	15257000	USD
CY2014Q1	nwbi	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	14451000	USD
CY2014Q1	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	1176462000	USD
CY2013Q4	nwbi	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	20568000	USD
CY2014Q1	nwbi	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	13709000	USD
CY2013Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1016767000	USD
CY2014Q1	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1009717000	USD
CY2013Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	121366000	USD
CY2014Q1	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	117724000	USD
CY2013Q4	nwbi	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2755000	USD
CY2014Q1	nwbi	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	3209000	USD
CY2013Q4	nwbi	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	60000	USD
CY2013Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	124061000	USD
CY2014Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	120933000	USD
CY2013Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	452468000	USD
CY2013Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	15690000	USD
CY2013Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	175906000	USD
CY2013Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses2 HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2	4938000	USD
CY2013Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	628374000	USD
CY2013Q4	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses1 HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1	20628000	USD
CY2014Q1	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	373652000	USD
CY2014Q1	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	9041000	USD
CY2014Q1	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	172524000	USD
CY2014Q1	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses2 HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2	4668000	USD
CY2014Q1	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Fair Value HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	546176000	USD
CY2014Q1	nwbi	Held To Maturity And Available For Sale Securities Continuous Unrealized Loss Position Aggregate Losses1 HeldToMaturityAndAvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1	13709000	USD
CY2013Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	10342000	USD
CY2014Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	10334000	USD
CY2012Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	9811000	USD
CY2013Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	9744000	USD
CY2014Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	8000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	5806291000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5907258000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5969865000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	-2846000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	-2461000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	76234000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	71348000	USD
CY2014Q1	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	844743000	USD
CY2013Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	789135000	USD
CY2012Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	73219000	USD
CY2013Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	72009000	USD
CY2014Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	4249000	USD
CY2013Q1	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	9123000	USD
CY2014Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1650000	USD
CY2013Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	755000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	5851074000	USD
CY2014Q1	nwbi	Loans And Leases Receivable Allowance Excluding Unallocated LoansAndLeasesReceivableAllowanceExcludingUnallocated	72083000	USD
CY2013Q4	nwbi	Loans And Leases Receivable Allowance Excluding Unallocated LoansAndLeasesReceivableAllowanceExcludingUnallocated	66686000	USD
CY2014Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	109082000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	107221000	USD
CY2014Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	709000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	690000	USD
CY2014Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	74511000	USD
CY2013Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	79166000	USD
CY2014Q1	us-gaap	Allowance For Credit Losses Change In Method Of Calculating Impairment AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment	14109000	USD
CY2013Q4	us-gaap	Allowance For Credit Losses Change In Method Of Calculating Impairment AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment	8515000	USD
CY2014Q1	nwbi	Financing Receivable Modifications Recorded Investment Additional Commitment FinancingReceivableModificationsRecordedInvestmentAdditionalCommitment	1070000	USD
CY2013Q4	nwbi	Financing Receivable Modifications Recorded Investment Additional Commitment FinancingReceivableModificationsRecordedInvestmentAdditionalCommitment	755000	USD
CY2014Q1	nwbi	Financing Receivable Modifications Recorded Investment Non Accrual FinancingReceivableModificationsRecordedInvestmentNonAccrual	34268000	USD
CY2013Q1	nwbi	Financing Receivable Modifications Recorded Investment Non Accrual FinancingReceivableModificationsRecordedInvestmentNonAccrual	46109000	USD
CY2014Q1	nwbi	Loans And Leases Receivable Net Of Deferred Income Percentage LoansAndLeasesReceivableNetOfDeferredIncomePercentage	1.000	pure
CY2014Q1	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue	51394000	USD
CY2014Q1	nwbi	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due Percentage FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDuePercentage	1.000	pure
CY2013Q4	nwbi	Loans And Leases Receivable Net Of Deferred Income Percentage LoansAndLeasesReceivableNetOfDeferredIncomePercentage	1.000	pure
CY2013Q4	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue	57757000	USD
CY2013Q4	nwbi	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due Percentage FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDuePercentage	1.000	pure
CY2014Q1	nwbi	Financing Receivable Recorded Investment Less Than90 Days Past Due FinancingReceivableRecordedInvestmentLessThan90DaysPastDue	57688000	USD
CY2013Q4	nwbi	Financing Receivable Recorded Investment Less Than90 Days Past Due FinancingReceivableRecordedInvestmentLessThan90DaysPastDue	49464000	USD
CY2014Q1	nwbi	Financing Receivable Recorded Accruing Loans Reviewed For Impairment FinancingReceivableRecordedAccruingLoansReviewedForImpairment	29575000	USD
CY2013Q4	nwbi	Financing Receivable Recorded Accruing Loans Reviewed For Impairment FinancingReceivableRecordedAccruingLoansReviewedForImpairment	44418000	USD
CY2014Q1	nwbi	Financing Receivable Recorded Accruing Troubled Debt Restructuring Not Reviewed For Impairment FinancingReceivableRecordedAccruingTroubledDebtRestructuringNotReviewedForImpairment	23750000	USD
CY2013Q4	nwbi	Financing Receivable Recorded Accruing Troubled Debt Restructuring Not Reviewed For Impairment FinancingReceivableRecordedAccruingTroubledDebtRestructuringNotReviewedForImpairment	22205000	USD
CY2014Q1	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	162407000	USD
CY2013Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	173844000	USD
CY2014Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	161579000	USD
CY2013	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	175013000	USD
CY2014Q1	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1433000	USD
CY2013	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	5955000	USD
CY2014Q1	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5728506000	USD
CY2013Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5691218000	USD
CY2014Q1	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	122568000	USD
CY2013Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	115073000	USD
CY2014Q1	nwbi	Financing Receivable Individually Evaluated For Impairment Reserved FinancingReceivableIndividuallyEvaluatedForImpairmentReserved	77998000	USD
CY2013Q4	nwbi	Financing Receivable Individually Evaluated For Impairment Reserved FinancingReceivableIndividuallyEvaluatedForImpairmentReserved	74633000	USD
CY2014Q1	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	17366000	USD
CY2013Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	11903000	USD
CY2014Q1	nwbi	Financing Receivable Individually Evaluated For Impairment Not Reserved FinancingReceivableIndividuallyEvaluatedForImpairmentNotReserved	44570000	USD
CY2013Q4	nwbi	Financing Receivable Individually Evaluated For Impairment Not Reserved FinancingReceivableIndividuallyEvaluatedForImpairmentNotReserved	40440000	USD
CY2013	nwbi	Financing Receivable Modifications Number Of Contract FinancingReceivableModificationsNumberOfContract	276	item
CY2014Q1	nwbi	Financing Receivable Modifications Number Of Contract FinancingReceivableModificationsNumberOfContract	276	item
CY2014Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	11	item
CY2014Q1	nwbi	Financing Receivable Modifications Recorded Investment Additions FinancingReceivableModificationsRecordedInvestmentAdditions	1468000	USD
CY2013Q1	nwbi	Financing Receivable Modifications Recorded Investment Additions FinancingReceivableModificationsRecordedInvestmentAdditions	5611000	USD
CY2012	nwbi	Financing Receivable Modifications Number Of Contract FinancingReceivableModificationsNumberOfContract	225	item
CY2013Q1	nwbi	Financing Receivable Modifications Number Of Contract FinancingReceivableModificationsNumberOfContract	269	item
CY2014Q1	nwbi	Financing Receivable Modifications Recorded Investment Net Paydowns FinancingReceivableModificationsRecordedInvestmentNetPaydowns	4494000	USD
CY2013Q1	nwbi	Financing Receivable Modifications Recorded Investment Net Paydowns FinancingReceivableModificationsRecordedInvestmentNetPaydowns	2337000	USD
CY2012Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	89444000	USD
CY2013Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	91365000	USD
CY2014Q1	nwbi	Financing Receivable Modifications Recorded Investment Accrual FinancingReceivableModificationsRecordedInvestmentAccrual	40243000	USD
CY2013Q1	nwbi	Financing Receivable Modifications Recorded Investment Accrual FinancingReceivableModificationsRecordedInvestmentAccrual	45256000	USD
CY2014Q1	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	1468000	USD
CY2014Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1483000	USD
CY2014Q1	nwbi	Financing Receivable Modification Allowance For Credit Losses FinancingReceivableModificationAllowanceForCreditLosses	161000	USD
CY2014Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	6	item
CY2014Q1	nwbi	Financing Receivable Modification That Subsequently Defaulted Pre Modification Recorded Investment FinancingReceivableModificationThatSubsequentlyDefaultedPreModificationRecordedInvestment	1091000	USD
CY2014Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	1042000	USD
CY2014Q1	nwbi	Increase Decrease In Financing Receivable Modifications Recorded Investment Reserve IncreaseDecreaseInFinancingReceivableModificationsRecordedInvestmentReserve	223000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	174461000	USD
CY2013Q4	us-gaap	Goodwill Goodwill	174463000	USD
CY2013Q1	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	5611000	USD
CY2013Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	58	item
CY2013Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	4838000	USD
CY2013Q1	nwbi	Financing Receivable Modification Allowance For Credit Losses FinancingReceivableModificationAllowanceForCreditLosses	600000	USD
CY2013Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	11	item
CY2013Q1	nwbi	Financing Receivable Modification That Subsequently Defaulted Pre Modification Recorded Investment FinancingReceivableModificationThatSubsequentlyDefaultedPreModificationRecordedInvestment	17472000	USD
CY2013Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	12788000	USD
CY2013Q1	nwbi	Increase Decrease In Financing Receivable Modifications Recorded Investment Reserve IncreaseDecreaseInFinancingReceivableModificationsRecordedInvestmentReserve	2348000	USD
CY2014Q1	nwbi	Financing Receivable Modifications Number Of Contracts Remodified FinancingReceivableModificationsNumberOfContractsRemodified	4	item
CY2014Q1	nwbi	Financing Receivable Remodifications Post Modification Recorded Investment FinancingReceivableRemodificationsPostModificationRecordedInvestment	159000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	56639000	USD
CY2014Q1	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	63628000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	17200000	USD
CY2014Q1	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	9443000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	131596000	USD
CY2014Q1	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	124465000	USD
CY2013Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	5674695000	USD
CY2014Q1	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	5726609000	USD
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	1323000	USD
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1008000	USD
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	779000	USD
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	550000	USD
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	391000	USD
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	232000	USD
CY2014Q1	us-gaap	Goodwill Goodwill	175988000	USD
CY2013	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2000	USD
CY2014Q1	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1525000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-11900000	USD
CY2014Q1	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	26300000	USD
CY2014Q1	nwbi	Guarantee Obligations Maximum Exposure Collateralized GuaranteeObligationsMaximumExposureCollateralized	25200000	USD
CY2014Q1	us-gaap	Other Deferred Credits Current OtherDeferredCreditsCurrent	931000	USD
CY2014Q1	nwbi	Guarantee Obligations Recourse Provisions Amount GuaranteeObligationsRecourseProvisionsAmount	0	USD
CY2014Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91154998	shares
CY2014Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1198314	shares
CY2014Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92353312	shares
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2013Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	90403909	shares
CY2013Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	474994	shares
CY2013Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	90878903	shares
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2013	nwbi	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Financial Instruments Total Unrealized Gains Losses Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisFinancialInstrumentsTotalUnrealizedGainsLossesPeriodIncreaseDecrease	0	USD
CY2014Q1	nwbi	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Financial Instruments Total Unrealized Gains Losses Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisFinancialInstrumentsTotalUnrealizedGainsLossesPeriodIncreaseDecrease	0	USD
CY2014Q1	nwbi	Fair Value Assets Amount Transfers Between Level1 And Level2 FairValueAssetsAmountTransfersBetweenLevel1AndLevel2	0	USD
CY2014Q1	nwbi	Fair Value Liabilities Amount Transfers Between Level1 And Level2 FairValueLiabilitiesAmountTransfersBetweenLevel1AndLevel2	0	USD
CY2013Q4	us-gaap	Assets Fair Value Disclosure Nonrecurring AssetsFairValueDisclosureNonrecurring	80933000	USD
CY2014Q1	us-gaap	Assets Fair Value Disclosure Nonrecurring AssetsFairValueDisclosureNonrecurring	77324000	USD
CY2014Q1	nwbi	Number Of Business Trusts Owned NumberOfBusinessTrustsOwned	2	item
CY2014Q1	us-gaap	Amount Of Ineffectiveness On Net Investment Hedges AmountOfIneffectivenessOnNetInvestmentHedges	0	USD
CY2014Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	2400000	USD
CY2014Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-8095000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-11488000	USD
CY2013Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-9975000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	5847000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	1350000	USD
CY2014Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	2042000	USD
CY2013Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-163000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3805000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1513000	USD
CY2014Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	81927000	USD
CY2013Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	98122000	USD
CY2014Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	379765000	USD
CY2013Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	293149000	USD
CY2014Q1	nwbi	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	634000	USD
CY2013Q4	nwbi	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	634000	USD
CY2014Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	117724000	USD
CY2013Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	121366000	USD
CY2014Q1	nwbi	Cash Cash Equivalents And Marketable Securities CashCashEquivalentsAndMarketableSecurities	1589767000	USD
CY2013Q4	nwbi	Cash Cash Equivalents And Marketable Securities CashCashEquivalentsAndMarketableSecurities	1530038000	USD
CY2013Q4	us-gaap	Loans Receivable Held For Sale Net LoansReceivableHeldForSaleNet	221000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Consumer Mortgage LoansAndLeasesReceivableConsumerMortgage	2485688000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Consumer Mortgage LoansAndLeasesReceivableConsumerMortgage	2482783000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Consumer Home Equity LoansAndLeasesReceivableConsumerHomeEquity	1065988000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Consumer Home Equity LoansAndLeasesReceivableConsumerHomeEquity	1083939000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Consumer Other LoansAndLeasesReceivableConsumerOther	223045000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Consumer Other LoansAndLeasesReceivableConsumerOther	228348000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Consumer LoansAndLeasesReceivableConsumer	3774721000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Consumer LoansAndLeasesReceivableConsumer	3795291000	USD
CY2014Q1	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	1664255000	USD
CY2013Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	1608399000	USD
CY2014Q1	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	412098000	USD
CY2013Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	402601000	USD
CY2014Q1	us-gaap	Loans And Leases Receivable Commercial LoansAndLeasesReceivableCommercial	2076353000	USD
CY2013Q4	us-gaap	Loans And Leases Receivable Commercial LoansAndLeasesReceivableCommercial	2011000000	USD
CY2014Q1	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	43714000	USD
CY2013Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	43715000	USD
CY2014Q1	us-gaap	Interest Receivable InterestReceivable	22188000	USD
CY2013Q4	us-gaap	Interest Receivable InterestReceivable	21821000	USD
CY2014Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	5735000	USD
CY2014Q1	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2792000	USD
CY2014Q1	us-gaap	Assets Assets	7974960000	USD
CY2013Q4	us-gaap	Assets Assets	7881476000	USD
CY2014Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	16692000	USD
CY2013Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	18203000	USD
CY2014Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	146880000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	146139000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	367000	USD
CY2014Q1	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	141173000	USD
CY2013Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	140172000	USD
CY2014Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4025000	USD
CY2013Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2319000	USD
CY2014Q1	us-gaap	Other Assets OtherAssets	59693000	USD
CY2013Q4	us-gaap	Other Assets OtherAssets	69663000	USD
CY2014Q1	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1236130000	USD
CY2013Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1191584000	USD
CY2014Q1	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	890788000	USD
CY2013Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	852809000	USD
CY2014Q1	us-gaap	Time Deposits TimeDeposits	1626740000	USD
CY2013Q4	us-gaap	Time Deposits TimeDeposits	1667397000	USD
CY2014Q1	us-gaap	Deposits Deposits	5774863000	USD
CY2013Q4	us-gaap	Deposits Deposits	5668879000	USD
CY2014Q1	us-gaap	Borrowed Funds BorrowedFunds	865621000	USD
CY2013Q4	us-gaap	Borrowed Funds BorrowedFunds	881645000	USD
CY2014Q1	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	103094000	USD
CY2013Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	103094000	USD
CY2014Q1	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	31074000	USD
CY2013Q4	us-gaap	Advance Payments By Borrowers For Taxes And Insurance AdvancePaymentsByBorrowersForTaxesAndInsurance	26669000	USD
CY2014Q1	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	860000	USD
CY2013Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	888000	USD
CY2014Q1	us-gaap	Other Liabilities OtherLiabilities	41892000	USD
CY2013Q4	us-gaap	Other Liabilities OtherLiabilities	43499000	USD
CY2014Q1	us-gaap	Liabilities Liabilities	6817404000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	6724674000	USD
CY2014Q1	us-gaap	Common Stock Value CommonStockValue	945000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	943000	USD
CY2014Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	622758000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	619678000	USD
CY2014Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	564580000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	571164000	USD
CY2014Q1	nwbi	Unallocated Common Stock Held By Esop UnallocatedCommonStockHeldByESOP	22632000	USD
CY2013Q4	nwbi	Unallocated Common Stock Held By Esop UnallocatedCommonStockHeldByESOP	23083000	USD
CY2014Q1	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	2798000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	1156802000	USD
CY2014Q1	us-gaap	Stockholders Equity StockholdersEquity	1157556000	USD
CY2014Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2014Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2014Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2014Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2014Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2014Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	94464430	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	94243713	shares
CY2013Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	72973000	USD
CY2014Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	69373000	USD
CY2013Q1	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	3441000	USD
CY2014Q1	us-gaap	Interest Income Securities Mortgage Backed InterestIncomeSecuritiesMortgageBacked	2793000	USD
CY2013Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	905000	USD
CY2014Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	1080000	USD
CY2013Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2063000	USD
CY2014Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1655000	USD
CY2013Q1	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	251000	USD
CY2014Q1	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	200000	USD
CY2013Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	7814000	USD
CY2014Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6490000	USD
CY2013Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	7831000	USD
CY2014Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	7714000	USD
CY2013Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63988000	USD
CY2014Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	60897000	USD
CY2013Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	56830000	USD
CY2013Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	27930000	USD
CY2014Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	53412000	USD
CY2014Q1	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	-2792000	USD
CY2014Q1	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	6000	USD
CY2013Q1	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	101000	USD
CY2014Q1	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	3348000	USD
CY2013Q1	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	8691000	USD
CY2014Q1	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	8408000	USD
CY2013Q1	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	2204000	USD
CY2014Q1	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	3047000	USD
CY2013Q1	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	2295000	USD
CY2014Q1	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	2564000	USD
CY2013Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-130000	USD
CY2014Q1	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-135000	USD
CY2013Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1085000	USD
CY2014Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1001000	USD
CY2013Q1	nwbi	Mortgage Banking Income MortgageBankingIncome	956000	USD
CY2014Q1	nwbi	Mortgage Banking Income MortgageBankingIncome	249000	USD
CY2013Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1176000	USD
CY2014Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1175000	USD
CY2014Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	27972000	USD
CY2013Q1	us-gaap	Occupancy Costs OccupancyCosts	6153000	USD
CY2014Q1	us-gaap	Occupancy Costs OccupancyCosts	6557000	USD
CY2013Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	3268000	USD
CY2014Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	3757000	USD
CY2013Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	5853000	USD
CY2014Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	6589000	USD
CY2013Q1	us-gaap	Professional Fees ProfessionalFees	1693000	USD
CY2014Q1	us-gaap	Professional Fees ProfessionalFees	2062000	USD
CY2013Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	348000	USD
CY2014Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	331000	USD
CY2013Q1	us-gaap	Marketing Expense MarketingExpense	1900000	USD
CY2014Q1	us-gaap	Marketing Expense MarketingExpense	1637000	USD
CY2013Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1438000	USD
CY2014Q1	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1297000	USD
CY2013Q1	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	599000	USD
CY2014Q1	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	639000	USD
CY2013Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2289000	USD
CY2014Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2322000	USD
CY2014Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	19906000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	21737000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	670000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	5596000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	66000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	1904000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	604000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	3692000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	680000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	251000	USD
CY2014Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	18445000	USD
CY2013Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	16811000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	3579000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	436000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1218000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	43000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	135000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1128469000	USD
CY2013Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1218000	USD
CY2014Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2294000	USD
CY2013Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1082000	USD
CY2014Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1239000	USD
CY2014Q1	us-gaap	Dividends Cash DividendsCash	21224000	USD
CY2013Q1	us-gaap	Stockholders Equity StockholdersEquity	1147580000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	883000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	2421000	USD
CY2014Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.23
CY2013Q1	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	727000	USD
CY2014Q1	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	3602000	USD
CY2013Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	3056000	USD
CY2014Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	2845000	USD
CY2013Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-8754000	USD
CY2014Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10003000	USD
CY2013Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5022000	USD
CY2014Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-6534000	USD
CY2013Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-57000	USD
CY2014Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-105000	USD
CY2013Q1	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	446000	USD
CY2014Q1	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	648000	USD
CY2013Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	32883000	USD
CY2014Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	660000	USD
CY2013Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	45010000	USD
CY2014Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	907000	USD
CY2013Q1	us-gaap	Share Based Compensation ShareBasedCompensation	1082000	USD
CY2014Q1	us-gaap	Share Based Compensation ShareBasedCompensation	1239000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	42229000	USD
CY2014Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	27076000	USD
CY2013Q1	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	108326000	USD
CY2014Q1	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	22805000	USD
CY2013Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	11856000	USD
CY2014Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	3643000	USD
CY2013Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	76309000	USD
CY2014Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	33414000	USD
CY2013Q1	nwbi	Originations Of Loans Receivable Held For Investment OriginationsOfLoansReceivableHeldForInvestment	407122000	USD
CY2014Q1	nwbi	Originations Of Loans Receivable Held For Investment OriginationsOfLoansReceivableHeldForInvestment	447423000	USD
CY2013Q1	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	477091000	USD
CY2014Q1	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	398726000	USD
CY2013Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	498000	USD
CY2014Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-1000	USD
CY2013Q1	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	4700000	USD
CY2014Q1	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	2866000	USD
CY2013Q1	us-gaap	Payments To Acquire Real Estate Held For Investment PaymentsToAcquireRealEstateHeldForInvestment	-114000	USD
CY2014Q1	us-gaap	Payments To Acquire Real Estate Held For Investment PaymentsToAcquireRealEstateHeldForInvestment	-152000	USD
CY2013Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3284000	USD
CY2014Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3607000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	50840000	USD
CY2014Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-32090000	USD
CY2013Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	35551000	USD
CY2014Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	105984000	USD
CY2013Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	20000000	USD
CY2013Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	17000	USD
CY2014Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	15000	USD
CY2013Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-20170000	USD
CY2014Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-16009000	USD
CY2013Q1	nwbi	Increase Decrease In Advances By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancesByBorrowersForTaxesAndInsurance	3835000	USD
CY2014Q1	nwbi	Increase Decrease In Advances By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancesByBorrowersForTaxesAndInsurance	4405000	USD
CY2014Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	21224000	USD
CY2013Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1218000	USD
CY2014Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2294000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	40417000	USD
CY2014Q1	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	75435000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	133486000	USD
CY2014Q1	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	70421000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	451704000	USD
CY2013Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	585190000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	391905000	USD
CY2014Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	462326000	USD
CY2013Q1	nwbi	Cash Paid For Interest On Deposits And Borrowings CashPaidForInterestOnDepositsAndBorrowings	15353000	USD
CY2014Q1	nwbi	Cash Paid For Interest On Deposits And Borrowings CashPaidForInterestOnDepositsAndBorrowings	14232000	USD
CY2013Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	3587000	USD
CY2014Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	5016000	USD
CY2013Q1	nwbi	Transfer Of Other Real Estate And Other Repossessed Personal Property TransferOfOtherRealEstateAndOtherRepossessedPersonalProperty	2985000	USD
CY2014Q1	nwbi	Transfer Of Other Real Estate And Other Repossessed Personal Property TransferOfOtherRealEstateAndOtherRepossessedPersonalProperty	1839000	USD
CY2013Q1	nwbi	Sale And Financing Of Other Real Estate Owned SaleAndFinancingOfOtherRealEstateOwned	269000	USD
CY2014Q1	nwbi	Sale And Financing Of Other Real Estate Owned SaleAndFinancingOfOtherRealEstateOwned	88000	USD
CY2014Q1	nwbi	Cash Paid For Interest On Deposits CashPaidForInterestOnDeposits	5819000	USD
CY2013Q1	nwbi	Cash Paid For Interest On Deposits CashPaidForInterestOnDeposits	7031000	USD
CY2014Q1	dei	Entity Registrant Name EntityRegistrantName	Northwest Bancshares, Inc.
CY2014Q1	dei	Entity Central Index Key EntityCentralIndexKey	0001471265
CY2014Q1	dei	Document Type DocumentType	10-Q
CY2014Q1	dei	Document Period End Date DocumentPeriodEndDate	2014-03-31
CY2014Q1	dei	Amendment Flag AmendmentFlag	false
CY2014Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2014Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2014Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2014Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	94648394	shares
CY2014Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2014
CY2014Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2014Q1	us-gaap	Loans Receivable Net LoansReceivableNet	5774840000	USD
CY2013Q4	us-gaap	Loans Receivable Net LoansReceivableNet	5734943000	USD
CY2013Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	67000	USD
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2014Q1	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2014Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7974960000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7881476000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-123000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	75000	USD
CY2013Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	71607000	USD
CY2013Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	512949000	USD
CY2013Q1	nwbi	Federal Funds Sold And Other Short Term Investments FederalFundsSoldAndOtherShortTermInvestments	634000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-138000	USD
CY2013Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	1167954000	USD
CY2013Q4	nwbi	Financing Receivable Modifications Recorded Investment Non Accrual FinancingReceivableModificationsRecordedInvestmentNonAccrual	28900000	USD

Files In Submission

Name	View Source	Status
0001104659-14-036952-index-headers.html	Edgar Link	pending
0001104659-14-036952-index.html	Edgar Link	pending
0001104659-14-036952.txt	Edgar Link	pending
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a14-8997_110q.htm	Edgar Link	pending
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$NWBI
Northwest Bancshares, Inc. Stock $nwbi

2014 Q1 Form 10-Q Financial Statement

#000110465914036952 Filed on May 09, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBI Northwest Bancshares, Inc. Stock $nwbi

2014 Q1 Form 10-Q Financial Statement

#000110465914036952 Filed on May 09, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBI
Northwest Bancshares, Inc. Stock $nwbi