$NFBK
Northfield Bancorp, Inc. Stock $nfbk

$nfbk Overview Financials Valuation SEC Filings Company Website

2022 Q1 Form 10-Q Financial Statement

#000149322522000057 Filed on May 10, 2022

Income Statement

Concept	2022 Q1	2021 Q4	2021 Q1
Revenue	$40.19M	$41.85M	$45.07M
YoY Change	-10.81%	-2.78%	5.46%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$999.0K	$1.020M	$1.020M
YoY Change	-2.06%	-23.88%	18.6%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$3.325M	$3.480M	$4.891M
YoY Change	-32.02%	-42.08%	-61.79%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$19.47M	$21.91M	$25.62M
YoY Change	-24.01%	25.36%	314.88%
Income Tax	$5.343M	$5.810M	$6.946M
% Of Pretax Income	27.44%	26.51%	27.11%
Net Earnings	$14.13M	$16.10M	$18.68M
YoY Change	-24.36%	23.28%	310.39%
Net Earnings / Revenue	35.15%	38.48%	41.44%
Basic Earnings Per Share	$0.30	$0.34	$0.38
Diluted Earnings Per Share	$0.30	$0.34	$0.38
COMMON SHARES
Basic Shares Outstanding	46.81M shares	49.62M shares	49.53M shares
Diluted Shares Outstanding	47.09M shares		49.63M shares

Balance Sheet

Concept	2022 Q1	2021 Q4	2021 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$135.5M	$91.07M	$127.6M
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	$25.36M	$25.94M	$27.51M
YoY Change	-7.83%	-7.99%	7.16%
Goodwill	$41.01M	$41.01M	$41.32M
YoY Change	-0.75%	-0.75%	7.57%
Intangibles
YoY Change
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	$5.516B	$5.431B	$5.577B
YoY Change	-1.09%	-1.52%	11.61%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$30.03M	$24.90M	$24.00M
YoY Change	25.13%	26.4%	7.14%
Accrued Expenses	$70.12M	$74.70M	$70.40M
YoY Change	-0.4%	3.03%	0.43%
Deferred Revenue
YoY Change
Short-Term Debt	$50.00M	$50.00M	$75.00M
YoY Change	-33.33%	-33.33%	0.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$100.1M	$99.60M	$94.40M
YoY Change	6.09%	8.03%	2.05%
LONG-TERM LIABILITIES
Long-Term Debt	$347.9M	$371.8M	$517.2M
YoY Change	-32.74%	-28.06%	-19.36%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$347.9M	$371.8M	$517.2M
YoY Change	-32.74%	-28.06%	-19.36%
TOTAL LIABILITIES
Total Short-Term Liabilities	$100.1M	$99.60M	$94.40M
Total Long-Term Liabilities	$347.9M	$371.8M	$517.2M
Total Liabilities	$4.801B	$4.691B	$4.822B
YoY Change	-0.45%	-1.47%	12.29%
SHAREHOLDERS EQUITY
Retained Earnings	$389.4M	$381.4M	$348.2M
YoY Change	11.82%	12.8%	8.15%
Common Stock	$648.0K	$648.0K	$648.0K
YoY Change	0.0%	0.0%	6.4%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$222.7M	$217.1M	$177.5M
YoY Change	25.45%	27.79%	11.5%
Treasury Stock Shares	15.86M shares	15.50M shares	13.10M shares
Shareholders Equity	$715.4M	$739.9M	$754.6M
YoY Change
Total Liabilities & Shareholders Equity	$5.516B	$5.431B	$5.577B
YoY Change	-1.09%	-1.52%	11.61%

Cashflow Statement

Concept	2022 Q1	2021 Q4	2021 Q1
OPERATING ACTIVITIES
Net Income	$14.13M	$16.10M	$18.68M
YoY Change	-24.36%	23.28%	310.39%
Depreciation, Depletion And Amortization	$999.0K	$1.020M	$1.020M
YoY Change	-2.06%	-23.88%	18.6%
Cash From Operating Activities	$19.60M	$21.36M	$20.20M
YoY Change	-2.97%	-17.18%	69.04%
INVESTING ACTIVITIES
Capital Expenditures	$365.0K	-$350.0K	$293.0K
YoY Change	24.57%	-76.35%	-63.65%
Acquisitions
YoY Change
Other Investing Activities	-$75.46M	-$121.6M	-$29.01M
YoY Change	160.11%	-40.49%	-234.0%
Cash From Investing Activities	-$75.82M	-$121.9M	-$29.30M
YoY Change	158.79%	-40.76%	-240.57%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$8.237M		$10.13M
YoY Change	-18.69%
Debt Paid & Issued, Net	$25.00M		$0.00
YoY Change			-100.0%
Cash From Financing Activities	$100.7M	17.97M	$49.13M
YoY Change	104.92%	-121.59%	-174.54%
NET CHANGE
Cash From Operating Activities	$19.60M	21.36M	$20.20M
Cash From Investing Activities	-$75.82M	-121.9M	-$29.30M
Cash From Financing Activities	$100.7M	17.97M	$49.13M
Net Change In Cash	$44.45M	-82.61M	$40.03M
YoY Change	11.04%	-68.63%	-220.86%
FREE CASH FLOW
Cash From Operating Activities	$19.60M	$21.36M	$20.20M
Capital Expenditures	$365.0K	-$350.0K	$293.0K
Free Cash Flow	$19.23M	$21.71M	$19.91M
YoY Change	-3.38%	-20.39%	78.63%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2022Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2022Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2022Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	80-0882592
CY2022Q1	dei	Amendment Flag AmendmentFlag	false
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CY2022Q1	dei	Document Period End Date DocumentPeriodEndDate	2022-03-31
CY2022Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2022Q1	dei	Entity File Number EntityFileNumber	001-35791
CY2022Q1	dei	Entity Registrant Name EntityRegistrantName	Northfield Bancorp, Inc.
CY2022Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	581 Main Street,
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CY2022Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	NJ
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CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	18677000	USD
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.38
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	14127000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	18677000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-34894000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1144000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	264000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	97000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-35158000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-1241000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	48000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-35206000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-1241000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-9767000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-321000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	74000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	27000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	13000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	0	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-25352000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-893000	USD
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-11225000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	17784000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	753981000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	18677000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-893000	USD
CY2021Q1	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	412000	USD
CY2022Q1	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	451000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	244000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2021Q1	us-gaap	Restricted Stock Award Forfeitures RestrictedStockAwardForfeitures	0	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	808000	USD
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.11
CY2021Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2021Q1	us-gaap	Dividends Common Stock DividendsCommonStock	5447000	USD
CY2021Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	13.64
CY2021Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	10130000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	754565000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	739883000	USD
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	14127000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-25352000	USD
CY2022Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	396000	USD
CY2022Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2022Q1	us-gaap	Restricted Stock Award Forfeitures RestrictedStockAwardForfeitures	0	USD
CY2022Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	231000	USD
CY2022Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.13
CY2022Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.13
CY2022Q1	us-gaap	Dividends Common Stock DividendsCommonStock	6101000	USD
CY2022Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	15.60
CY2022Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	8237000	USD
CY2022Q1	us-gaap	Stockholders Equity StockholdersEquity	715398000	USD
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	14127000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	18677000	USD
CY2022Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	403000	USD
CY2021Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2374000	USD
CY2022Q1	us-gaap	Share Based Compensation ShareBasedCompensation	847000	USD
CY2021Q1	us-gaap	Share Based Compensation ShareBasedCompensation	656000	USD
CY2022Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	946000	USD
CY2021Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	972000	USD
CY2022Q1	nfbk	Amortization Of Premiums And Deferred Loan Costs AmortizationOfPremiumsAndDeferredLoanCosts	2608000	USD
CY2021Q1	nfbk	Amortization Of Premiums And Deferred Loan Costs AmortizationOfPremiumsAndDeferredLoanCosts	564000	USD
CY2022Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	53000	USD
CY2021Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	50000	USD
CY2022Q1	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1130000	USD
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1079000	USD
CY2022Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	839000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	848000	USD
CY2022Q1	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	0	USD
CY2021Q1	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	39000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	264000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	97000	USD
CY2022Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-802000	USD
CY2021Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	364000	USD
CY2022Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-503000	USD
CY2021Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-513000	USD
CY2022Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	19000	USD
CY2021Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	63000	USD
CY2022Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2604000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-2905000	USD
CY2022Q1	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-3303000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-1433000	USD
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	19598000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	20198000	USD
CY2022Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	91853000	USD
CY2021Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	107720000	USD
CY2022Q1	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	0	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	23537000	USD
CY2022Q1	nfbk	Redemptions Of Federal Home Loan Bank Stock RedemptionsOfFederalHomeLoanBankStock	1125000	USD
CY2021Q1	nfbk	Redemptions Of Federal Home Loan Bank Stock RedemptionsOfFederalHomeLoanBankStock	0	USD
CY2022Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	138982000	USD
CY2021Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	103743000	USD
CY2022Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	2541000	USD
CY2021Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	220000	USD
CY2022Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	113767000	USD
CY2021Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	152892000	USD
CY2022Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	37000	USD
CY2021Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	306000	USD
CY2022Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	41464000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	5942000	USD
CY2022Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1526000	USD
CY2021Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	365000	USD
CY2021Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	293000	USD
CY2022Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-75822000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-29299000	USD
CY2022Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	133532000	USD
CY2021Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	59165000	USD
CY2022Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6101000	USD
CY2021Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	5447000	USD
CY2022Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	231000	USD
CY2021Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	808000	USD
CY2022Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8237000	USD
CY2021Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	10130000	USD
CY2022Q1	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	5123000	USD
CY2021Q1	us-gaap	Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance IncreaseDecreaseInAdvancePaymentsByBorrowersForTaxesAndInsurance	4350000	USD
CY2022Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1122000	USD
CY2021Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	381000	USD
CY2022Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	25000000	USD
CY2021Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2022Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	100670000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	49127000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	44446000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	40026000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	91068000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	87544000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	135514000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	127570000	USD
CY2022Q1	us-gaap	Interest Paid Net InterestPaidNet	3418000	USD
CY2021Q1	us-gaap	Interest Paid Net InterestPaidNet	5042000	USD
CY2022Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	827000	USD
CY2021Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	496000	USD
CY2022Q1	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	102000	USD
CY2021Q1	us-gaap	Allowance For Loan And Lease Losses Writeoffs Net AllowanceForLoanAndLeaseLossesWriteoffsNet	2389000	USD
CY2022Q1	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	0	USD
CY2021Q1	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	5215000	USD
CY2022Q1	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	0	USD
CY2021Q1	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	1612000	USD
CY2022Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	USD
CY2021Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	100000	USD
CY2022Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1186714000	USD
CY2022Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1514000	USD
CY2022Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	33951000	USD
CY2022Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1154277000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1205516000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	7824000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	5103000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1208237000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	546400000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	522100000	USD
CY2022Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	41500000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	264000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	5900000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	97000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	USD
CY2022Q1	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	-802000	USD
CY2021Q1	us-gaap	Debt Securities Trading Realized Gain Loss DebtSecuritiesTradingRealizedGainLoss	364000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	29210000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	900241000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	4741000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	94876000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	33951000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	995117000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	4637000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	689869000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	2500000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	466000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	21328000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	5103000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	711197000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	2300000	USD
CY2022Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	5243000	USD
CY2022Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	14000	USD
CY2022Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	75000	USD
CY2022Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	5182000	USD
CY2021Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	5283000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	192000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	5475000	USD
CY2021Q1	us-gaap	Debt Securities Held To Maturity Sold Amount DebtSecuritiesHeldToMaturitySoldAmount	0	USD
CY2022Q1	us-gaap	Debt Securities Held To Maturity Sold Amount DebtSecuritiesHeldToMaturitySoldAmount	0	USD
CY2021Q4	us-gaap	Held To Maturity Securities Restricted HeldToMaturitySecuritiesRestricted	2100000	USD
CY2022Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	75000	USD
CY2022Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	3814000	USD
CY2022Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2022Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0	USD
CY2022Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	75000	USD
CY2022Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	3814000	USD
CY2022Q1	nfbk	Debt Securities Held To Maturity Unrealized Loss Position Less Than Twelve Months Number Of Positions DebtSecuritiesHeldToMaturityUnrealizedLossPositionLessThanTwelveMonthsNumberOfPositions	5	security
CY2022Q1	nfbk	Debt Securities Held To Maturity Unrealized Loss Position Greater Than Twelve Months Number Of Positions DebtSecuritiesHeldToMaturityUnrealizedLossPositionGreaterThanTwelveMonthsNumberOfPositions	0	security
CY2021Q4	nfbk	Debt Securities Held To Maturity Unrealized Loss Position Number Of Positions DebtSecuritiesHeldToMaturityUnrealizedLossPositionNumberOfPositions	0	security
CY2022Q1	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	USD
CY2022Q1	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	16000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	16000	USD
CY2022Q1	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	7900000	USD
CY2021Q4	us-gaap	Equity Securities Fv Ni And Without Readily Determinable Fair Value EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue	5300000	USD
CY2022Q1	nfbk	Delinquent Status Classification Criteria Days Minimum DelinquentStatusClassificationCriteriaDaysMinimum	P90D
CY2022Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	3898581000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	3806617000	USD
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	39274000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	38973000	USD
CY2022Q1	us-gaap	Notes Receivable Net NotesReceivableNet	3859307000	USD
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	3767644000	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	0	USD
CY2022Q1	us-gaap	Loans Receivable Held For Sale Amount LoansReceivableHeldForSaleAmount	0	USD
CY2022Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	8100000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	7600000	USD
CY2022Q1	nfbk	Delinquent Status Classification Criteria Days Minimum DelinquentStatusClassificationCriteriaDaysMinimum	P90D
CY2022Q1	nfbk	Principal Balance Threshold For Non Accrual Status PrincipalBalanceThresholdForNonAccrualStatus	500000	USD
CY2022Q1	nfbk	Loans Deemed To Be Impaired Non Accrual Amount LoansDeemedToBeImpairedNonAccrualAmount	4200000	USD
CY2021Q4	nfbk	Loans Deemed To Be Impaired Non Accrual Amount LoansDeemedToBeImpairedNonAccrualAmount	4200000	USD
CY2022Q1	nfbk	Principal Balance Threshold For Non Accrual Status PrincipalBalanceThresholdForNonAccrualStatus	500000	USD
CY2022Q1	nfbk	Loans On Non Accrual Status With Principal Balances Below Threshold Definition Of Impaired Loan LoansOnNonAccrualStatusWithPrincipalBalancesBelowThresholdDefinitionOfImpairedLoan	3900000	USD
CY2021Q4	nfbk	Loans On Non Accrual Status With Principal Balances Below Threshold Definition Of Impaired Loan LoansOnNonAccrualStatusWithPrincipalBalancesBelowThresholdDefinitionOfImpairedLoan	3400000	USD
CY2022Q1	nfbk	Delinquent Status Classification Criteria Days Minimum DelinquentStatusClassificationCriteriaDaysMinimum	P90D
CY2021	nfbk	Delinquent Status Classification Criteria Days Minimum DelinquentStatusClassificationCriteriaDaysMinimum	P90D
CY2022Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	59000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	384000	USD
	nfbk	Delinquent Status Classification Criteria Days Minimum DelinquentStatusClassificationCriteriaDaysMinimum	P90D
CY2022Q1	nfbk	Delinquent Status Classification Criteria Days Minimum DelinquentStatusClassificationCriteriaDaysMinimum	P90D
CY2022Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	8102000	USD
CY2022Q1	nfbk	Financing Receivable Nonaccrual Unpaid Principal Balance FinancingReceivableNonaccrualUnpaidPrincipalBalance	10978000	USD
CY2022Q1	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	4202000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	7622000	USD
CY2021Q4	nfbk	Financing Receivable Nonaccrual Unpaid Principal Balance FinancingReceivableNonaccrualUnpaidPrincipalBalance	8743000	USD
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	4241000	USD
CY2022Q1	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	40000	USD
CY2021Q1	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	49000	USD
CY2022Q1	nfbk	Financing Receivable Impaired Secured By Collateral FinancingReceivableImpairedSecuredByCollateral	7300000	USD
CY2021Q4	nfbk	Financing Receivable Impaired Secured By Collateral FinancingReceivableImpairedSecuredByCollateral	7400000	USD
CY2022Q1	nfbk	Trouble Debt Restructuring Amount TroubleDebtRestructuringAmount	8600000	USD
CY2021Q4	nfbk	Trouble Debt Restructuring Amount TroubleDebtRestructuringAmount	9000000	USD
CY2021Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	contract
CY2022Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	contract
CY2022Q1	nfbk	Financing Receivable Threshold Individually Evaluated For Impairment FinancingReceivableThresholdIndividuallyEvaluatedForImpairment	500000	USD
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	46200	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	30200	USD
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	1852000	USD
CY2022Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	279000	USD
CY2022Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2131000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	38973000	USD
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	185000	USD
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	83000	USD
CY2022Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	403000	USD
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	39274000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	37607000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2432000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	43000	USD
CY2021Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2374000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	43197000	USD
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	46000	USD
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	34598000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	34211000	USD
CY2021Q4	nfbk	Financing Receivable Allowance For Credit Losses Pcd Loans Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesPCDLoansEvaluatedForImpairment	4732000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	3806617000	USD
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	9986000	USD
CY2022Q1	nfbk	Financing Receivable Allowance For Credit Losses Pcd Loans Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesPCDLoansEvaluatedForImpairment	4630000	USD
CY2022Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	3898581000	USD
CY2022Q1	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	9599000	USD
CY2022Q1	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	3850569000	USD
CY2022Q1	nfbk	Financing Receivables Pcd Loans Evaluated For Impairment FinancingReceivablesPCDLoansEvaluatedForImpairment	14064000	USD
CY2022Q1	nfbk	Financing Receivable Not Evaluated For Impairment FinancingReceivableNotEvaluatedForImpairment	24349000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	30000	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	3740295000	USD
CY2021Q4	nfbk	Financing Receivables Pcd Loans Evaluated For Impairment FinancingReceivablesPCDLoansEvaluatedForImpairment	15819000	USD
CY2021Q4	nfbk	Financing Receivable Not Evaluated For Impairment FinancingReceivableNotEvaluatedForImpairment	40517000	USD
CY2022Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Demand InterestExpenseDomesticDepositLiabilitiesDemand	571000	USD
CY2021Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Demand InterestExpenseDomesticDepositLiabilitiesDemand	932000	USD
CY2022Q1	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	944096000	USD
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	898490000	USD
CY2022Q1	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	1231377000	USD
CY2021Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	1112292000	USD
CY2022Q1	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1768629000	USD
CY2021Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1776191000	USD
CY2022Q1	us-gaap	Time Deposits TimeDeposits	358764000	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	382361000	USD
CY2022Q1	us-gaap	Deposits Deposits	4302866000	USD
CY2021Q4	us-gaap	Deposits Deposits	4169334000	USD
CY2022Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Certificates Of Deposit InterestExpenseDomesticDepositLiabilitiesCertificatesOfDeposit	588000	USD
CY2021Q1	us-gaap	Interest Expense Domestic Deposit Liabilities Certificates Of Deposit InterestExpenseDomesticDepositLiabilitiesCertificatesOfDeposit	938000	USD
CY2022Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1159000	USD
CY2021Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1870000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1769979	shares
CY2021Q4	nfbk	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue	4.02
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	13.95
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y11M12D
CY2022Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	17040	shares
CY2022Q1	nfbk	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue	3.95
CY2022Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	13.54
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1752939	shares
CY2021Q1	nfbk	Impaired Financing Receivables Charge Off ImpairedFinancingReceivablesChargeOff	2400000	USD
CY2022Q1	nfbk	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue	4.02
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	13.96
CY2022Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y8M15D
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1752939	shares
CY2022Q1	nfbk	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue	4.02
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	13.96
CY2022Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y8M15D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	222844	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	13.21
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	181908	shares
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	15.78
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	62836	shares
CY2022Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	100000	USD
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	12.87
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	2875	shares
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	14.00
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	339041	shares
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	14.65
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	396000	USD
CY2021Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	243000	USD
CY2022Q1	nfbk	Investment Owned At Net Asset Value InvestmentOwnedAtNetAssetValue	7500000	USD
CY2021Q4	nfbk	Investment Owned At Net Asset Value InvestmentOwnedAtNetAssetValue	5000000	USD
CY2022Q1	nfbk	Impaired Financing Receivable Reserve Increase Decrease ImpairedFinancingReceivableReserveIncreaseDecrease	16000	USD
CY2022Q1	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	3491000	USD
CY2021Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	3807000	USD
CY2022Q1	nfbk	Other Real Estate Owned Fair Value Disclosure OtherRealEstateOwnedFairValueDisclosure	100000	USD
CY2021Q4	nfbk	Other Real Estate Owned Fair Value Disclosure OtherRealEstateOwnedFairValueDisclosure	100000	USD
CY2022Q1	nfbk	Principal Amount Outstanding Of Impaired Loans Heldfor Investment Heldfor Sale PrincipalAmountOutstandingOfImpairedLoansHeldforInvestmentHeldforSale	5500000	USD
CY2021Q4	nfbk	Principal Amount Outstanding Of Impaired Loans Heldfor Investment Heldfor Sale PrincipalAmountOutstandingOfImpairedLoansHeldforInvestmentHeldforSale	5800000	USD
CY2022Q1	nfbk	Estimated Fair Value Of Impaired Loans Held For Investment EstimatedFairValueOfImpairedLoansHeldForInvestment	3500000	USD
CY2021Q4	nfbk	Estimated Fair Value Of Impaired Loans Held For Investment EstimatedFairValueOfImpairedLoansHeldForInvestment	3800000	USD
CY2021Q1	nfbk	Impaired Financing Receivable Reserve Increase Decrease ImpairedFinancingReceivableReserveIncreaseDecrease	3000	USD
CY2022Q1	nfbk	Impaired Financing Receivables Charge Off ImpairedFinancingReceivablesChargeOff	102000	USD
CY2022Q1	nfbk	Investment Owned At Net Asset Value InvestmentOwnedAtNetAssetValue	7500000	USD
CY2021Q4	nfbk	Investment Owned At Net Asset Value InvestmentOwnedAtNetAssetValue	5000000	USD
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	14127000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	18677000	USD
CY2022Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46811331	shares
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49528419	shares
CY2022Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	277044	shares
CY2021Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	105225	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47088375	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49633644	shares
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.38
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	273469	shares
CY2021Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1002377	shares
CY2022Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	32800000	USD
CY2022Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	38600000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	33900000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	39900000	USD
CY2022Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	1469000	USD
CY2021Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	1455000	USD
CY2022Q1	us-gaap	Variable Lease Cost VariableLeaseCost	965000	USD
CY2021Q1	us-gaap	Variable Lease Cost VariableLeaseCost	1235000	USD
CY2022Q1	us-gaap	Lease Cost LeaseCost	2434000	USD
CY2021Q1	us-gaap	Lease Cost LeaseCost	2690000	USD
CY2022Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	1564000	USD
CY2021Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	1708000	USD
CY2022Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2021Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2022Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y9M21D
CY2021Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y3M3D
CY2022Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0356
CY2021Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0360
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	4318000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5802000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5372000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	5024000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4253000	USD
CY2022Q1	nfbk	Lessee Operating Lease Liability Payments Due After Year Four LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour	24128000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	48897000	USD
CY2022Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10287000	USD
CY2022Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	38610000	USD
CY2022Q1	nfbk	Lessee Operating Lease Lease Not Yet Commenced Number Or Lease Agreements LesseeOperatingLeaseLeaseNotYetCommencedNumberOrLeaseAgreements	2	lease_obligation
CY2022Q1	us-gaap	Lessee Operating Lease Lease Not Yet Commenced Term Of Contract1 LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1	P10Y
CY2022Q1	nfbk	Lessee Operating Lease Lease Not Yet Commenced Liability LesseeOperatingLeaseLeaseNotYetCommencedLiability	4200000	USD
CY2022Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1331000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1197000	USD
CY2022Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	839000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	848000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	264000	USD
CY2022Q1	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	97000	USD
CY2022Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-802000	USD
CY2021Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	364000	USD
CY2022Q1	us-gaap	Revenue Not From Contract With Customer Other RevenueNotFromContractWithCustomerOther	81000	USD
CY2021Q1	us-gaap	Revenue Not From Contract With Customer Other RevenueNotFromContractWithCustomerOther	130000	USD
CY2022Q1	us-gaap	Noninterest Income NoninterestIncome	1713000	USD
CY2021Q1	us-gaap	Noninterest Income NoninterestIncome	2636000	USD
CY2021Q1	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	0	USD

Files In Submission

Name	View Source	Status
ex311-2022x3x31.htm	Edgar Link	pending
0001493225-22-000057-index-headers.html	Edgar Link	pending
0001493225-22-000057-index.html	Edgar Link	pending
0001493225-22-000057.txt	Edgar Link	pending
0001493225-22-000057-xbrl.zip	Edgar Link	pending
ex312-2022x3x31.htm	Edgar Link	pending
ex32-2022x3x31.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
nfbk-20220331.htm	Edgar Link	pending
nfbk-20220331.xsd	Edgar Link	pending
nfbk-20220331_cal.xml	Edgar Link	unprocessable
nfbk-20220331_def.xml	Edgar Link	unprocessable
nfbk-20220331_htm.xml	Edgar Link	completed
nfbk-20220331_lab.xml	Edgar Link	unprocessable
nfbk-20220331_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NFBK
Northfield Bancorp, Inc. Stock $nfbk

2022 Q1 Form 10-Q Financial Statement

#000149322522000057 Filed on May 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFBK Northfield Bancorp, Inc. Stock $nfbk

2022 Q1 Form 10-Q Financial Statement

#000149322522000057 Filed on May 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NFBK
Northfield Bancorp, Inc. Stock $nfbk