$NTB
Bank of N.T. Butterfield & Son Ltd Stock $ntb

$ntb Overview Financials Valuation SEC Filings Company Website

2022 Q4 Form 20-F Financial Statement

#000165324223000007 Filed on February 22, 2023

Income Statement

Concept	2022 Q4	2022	2021 Q4
Revenue		$549.3M
YoY Change		9.93%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$56.74M
YoY Change		-11.13%
% of Gross Profit
Depreciation & Amortization	$8.917M	$18.48M	$15.00M
YoY Change	-40.55%	-73.41%	-13.29%
% of Gross Profit
Operating Expenses		$56.74M
YoY Change		-11.13%
Operating Profit
YoY Change
Interest Expense		$54.80M
YoY Change		118.4%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$63.83M	$217.7M	$42.40M
YoY Change	50.55%	31.3%	0.71%
Income Tax	$723.0K	$3.682M	$800.0K
% Of Pretax Income	1.13%	1.69%	1.89%
Net Earnings	$63.11M	$214.0M	$41.70M
YoY Change	51.34%	31.54%	-0.95%
Net Earnings / Revenue		38.96%
Basic Earnings Per Share		$4.32
Diluted Earnings Per Share	$1.26	$4.29	$837.3K
COMMON SHARES
Basic Shares Outstanding	50.28M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2022 Q4	2022	2021 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$7.828B		$8.417B
YoY Change	-7.0%
Cash & Equivalents	$2.101B		$2.180B
Short-Term Investments	$5.727B		$6.237B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$146.1M	$179.8M	$178.0M
YoY Change	-17.9%	1.0%	-9.64%
Goodwill	$22.89M		$25.36M
YoY Change	-9.72%		-1.06%
Intangibles
YoY Change
Long-Term Investments	$12.48M	$12.48M	$13.00M
YoY Change	-3.97%	-3.97%	0.0%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$14.31B	$14.31B	$15.34B
YoY Change	-6.71%	-6.71%	4.04%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$152.9M	$152.9M	$151.0M
YoY Change	1.26%	1.26%	-5.03%
Accrued Expenses	$32.97M	$32.97M	$39.00M
YoY Change	-15.47%	-15.47%	-13.33%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$185.9M	$185.9M	$190.0M
YoY Change	-2.18%	-2.18%	-6.86%
LONG-TERM LIABILITIES
Long-Term Debt	$172.3M	$172.3M	$172.0M
YoY Change	0.17%	0.17%	0.58%
Other Long-Term Liabilities	$92.02M	$92.02M	$126.0M
YoY Change	-26.97%	-26.97%	-3.82%
Total Long-Term Liabilities	$264.3M	$264.3M	$298.0M
YoY Change	-11.31%	-11.31%	-1.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$185.9M	$185.9M	$190.0M
Total Long-Term Liabilities	$264.3M	$264.3M	$298.0M
Total Liabilities	$13.44B	$13.44B	$14.36B
YoY Change	-6.38%	-6.38%	4.37%
SHAREHOLDERS EQUITY
Retained Earnings	$229.7M		$104.3M
YoY Change	120.2%
Common Stock	$503.0K		$499.0K
YoY Change	0.8%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$864.8M	$864.8M	$977.0M
YoY Change
Total Liabilities & Shareholders Equity	$14.31B	$14.31B	$15.34B
YoY Change	-6.71%	-6.71%	4.04%

Cashflow Statement

Concept	2022 Q4	2022	2021 Q4
OPERATING ACTIVITIES
Net Income	$63.11M	$214.0M	$41.70M
YoY Change	51.34%	31.54%	-0.95%
Depreciation, Depletion And Amortization	$8.917M	$18.48M	$15.00M
YoY Change	-40.55%	-73.41%	-13.29%
Cash From Operating Activities	$71.66M	$219.3M	$71.60M
YoY Change	0.08%	-12.75%	105.75%
INVESTING ACTIVITIES
Capital Expenditures	$6.093M	$26.88M	-$7.200M
YoY Change	-184.63%	-271.18%	-2500.0%
Acquisitions
YoY Change
Other Investing Activities	$237.9M	$318.9M	-$153.2M
YoY Change	-255.3%	-116.87%	148.7%
Cash From Investing Activities	$231.8M	$292.0M	-$160.4M
YoY Change	-244.53%	-115.32%	161.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$3.897M	-$7.900M
YoY Change		-119.68%	71.74%
Debt Paid & Issued, Net		$0.00
YoY Change
Cash From Financing Activities	257.7M	-$506.8M	-49.00M
YoY Change	-625.92%	-194.59%	-104.5%
NET CHANGE
Cash From Operating Activities	71.66M	$219.3M	71.60M
Cash From Investing Activities	231.8M	$292.0M	-160.4M
Cash From Financing Activities	257.7M	-$506.8M	-49.00M
Net Change In Cash	561.2M	-$86.95M	-137.8M
YoY Change	-507.24%	-92.23%	-112.96%
FREE CASH FLOW
Cash From Operating Activities	$71.66M	$219.3M	$71.60M
Capital Expenditures	$6.093M	$26.88M	-$7.200M
Free Cash Flow	$65.56M	$192.4M	$78.80M
YoY Change	-16.8%	-27.94%	128.41%

Facts In Submission

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CY2021Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	20058000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-377452000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-124917000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	864815000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	977493000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	14306062000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15335200000	usd
CY2022	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	29727000	usd
CY2021	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	29853000	usd
CY2020	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	29225000	usd
CY2022	us-gaap	Investment Banking Revenue InvestmentBankingRevenue	57120000	usd
CY2021	us-gaap	Investment Banking Revenue InvestmentBankingRevenue	51920000	usd
CY2020	us-gaap	Investment Banking Revenue InvestmentBankingRevenue	47346000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	47831000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	43434000	usd
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	37180000	usd
CY2022	ntb	Trust Income TrustIncome	52312000	usd
CY2021	ntb	Trust Income TrustIncome	52873000	usd
CY2020	ntb	Trust Income TrustIncome	50653000	usd
CY2022	ntb	Custodyand Other Administration Services Revenue CustodyandOtherAdministrationServicesRevenue	13626000	usd
CY2021	ntb	Custodyand Other Administration Services Revenue CustodyandOtherAdministrationServicesRevenue	15232000	usd
CY2020	ntb	Custodyand Other Administration Services Revenue CustodyandOtherAdministrationServicesRevenue	13845000	usd
CY2022	us-gaap	Noninterest Income Other NoninterestIncomeOther	5971000	usd
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	4795000	usd
CY2020	us-gaap	Noninterest Income Other NoninterestIncomeOther	5610000	usd
CY2022	ntb	Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Other InvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandOther	206587000	usd
CY2021	ntb	Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Other InvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandOther	198107000	usd
CY2020	ntb	Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Other InvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandOther	183859000	usd
CY2022	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	249390000	usd
CY2021	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	221544000	usd
CY2020	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	230656000	usd
CY2022	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	38939000	usd
CY2021	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	48422000	usd
CY2020	us-gaap	Interest Income Debt Securities Available For Sale Operating InterestIncomeDebtSecuritiesAvailableForSaleOperating	50621000	usd
CY2022	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	76853000	usd
CY2021	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	53488000	usd
CY2020	us-gaap	Interest And Dividend Income Securities Held To Maturity InterestAndDividendIncomeSecuritiesHeldToMaturity	58607000	usd
CY2022	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	33201000	usd
CY2021	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1444000	usd
CY2020	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	12125000	usd
CY2022	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	398383000	usd
CY2021	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	324898000	usd
CY2020	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	352009000	usd
CY2022	us-gaap	Interest Expense Deposits InterestExpenseDeposits	45176000	usd
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	15490000	usd
CY2020	us-gaap	Interest Expense Deposits InterestExpenseDeposits	25116000	usd
CY2022	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	9601000	usd
CY2021	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	9601000	usd
CY2020	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	9294000	usd
CY2022	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	22000	usd
CY2021	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	0	usd
CY2020	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	0	usd
CY2022	us-gaap	Interest Expense InterestExpense	54799000	usd
CY2021	us-gaap	Interest Expense InterestExpense	25091000	usd
CY2020	us-gaap	Interest Expense InterestExpense	34410000	usd
CY2022	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	343584000	usd
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	299807000	usd
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	317599000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2396000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3128000	usd
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	8491000	usd
CY2022	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	341188000	usd
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	302935000	usd
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	309108000	usd
CY2022	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	14000	usd
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	85000	usd
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	658000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	-19000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	-239000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	1220000	usd
CY2022	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	448000	usd
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-53000	usd
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-104000	usd
CY2022	ntb	Noninterest Income Other Operating Income Expense NoninterestIncomeOtherOperatingIncomeExpense	1079000	usd
CY2021	ntb	Noninterest Income Other Operating Income Expense NoninterestIncomeOtherOperatingIncomeExpense	-1154000	usd
CY2020	ntb	Noninterest Income Other Operating Income Expense NoninterestIncomeOtherOperatingIncomeExpense	-552000	usd
CY2022	ntb	Noninterest Income Excluding Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Foreign Currency Transaction Gain Loss NoninterestIncomeExcludingInvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandForeignCurrencyTransactionGainLoss	1522000	usd
CY2021	ntb	Noninterest Income Excluding Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Foreign Currency Transaction Gain Loss NoninterestIncomeExcludingInvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandForeignCurrencyTransactionGainLoss	-1361000	usd
CY2020	ntb	Noninterest Income Excluding Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Foreign Currency Transaction Gain Loss NoninterestIncomeExcludingInvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandForeignCurrencyTransactionGainLoss	1222000	usd
CY2022	us-gaap	Revenues Revenues	549297000	usd
CY2021	us-gaap	Revenues Revenues	499681000	usd
CY2020	us-gaap	Revenues Revenues	494189000	usd
CY2022	us-gaap	Labor And Related Expense LaborAndRelatedExpense	166189000	usd
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	161317000	usd
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	173662000	usd
CY2022	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	56740000	usd
CY2021	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	63843000	usd
CY2020	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	65156000	usd
CY2022	us-gaap	Professional Fees ProfessionalFees	19640000	usd
CY2021	us-gaap	Professional Fees ProfessionalFees	21400000	usd
CY2020	us-gaap	Professional Fees ProfessionalFees	21263000	usd
CY2022	us-gaap	Occupancy Net OccupancyNet	31442000	usd
CY2021	us-gaap	Occupancy Net OccupancyNet	30862000	usd
CY2020	us-gaap	Occupancy Net OccupancyNet	29392000	usd
CY2022	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	21982000	usd
CY2021	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	22091000	usd
CY2020	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	21323000	usd
CY2022	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	3775000	usd
CY2021	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	3888000	usd
CY2020	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	2640000	usd
CY2022	us-gaap	Marketing Expense MarketingExpense	6357000	usd
CY2021	us-gaap	Marketing Expense MarketingExpense	4561000	usd
CY2020	us-gaap	Marketing Expense MarketingExpense	4443000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5680000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6011000	usd
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5819000	usd
CY2022	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19790000	usd
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19917000	usd
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	20896000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	331595000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	333890000	usd
CY2020	us-gaap	Noninterest Expense NoninterestExpense	344594000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	217702000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	165791000	usd
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	149595000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3682000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3123000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2378000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	214020000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	162668000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	147217000	usd
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.32
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.28
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.91
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.29
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.26
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.90
CY2022	us-gaap	Net Income Loss NetIncomeLoss	214020000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	162668000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	147217000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4787000	usd
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	152000	usd
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-247000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	-91303000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	151000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	665000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-198363000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-94761000	usd
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	60971000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-41918000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-19221000	usd
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	23972000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-252535000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-75237000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	37417000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-38515000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	87431000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	184634000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	864815000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	977493000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	981948000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	214020000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	162668000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	147217000	usd
CY2022	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	40177000	usd
CY2021	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	69456000	usd
CY2020	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	62435000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2396000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3128000	usd
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	8491000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	17077000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	15151000	usd
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	15245000	usd
CY2022	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	14000	usd
CY2021	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-7096000	usd
CY2020	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-102000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-19000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-239000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	1220000	usd
CY2022	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	448000	usd
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-53000	usd
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-104000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	39000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	123000	usd
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1298000	usd
CY2022	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	169000	usd
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	442000	usd
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	2845000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	54021000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-13295000	usd
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	8143000	usd
CY2022	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-65000	usd
CY2021	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-13800000	usd
CY2020	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-37628000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	219271000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	251349000	usd
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	188150000	usd
CY2022	us-gaap	Proceeds From Payments For Securities Purchased Under Agreements To Resell ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell	36236000	usd
CY2021	us-gaap	Proceeds From Payments For Securities Purchased Under Agreements To Resell ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell	100932000	usd
CY2020	us-gaap	Proceeds From Payments For Securities Purchased Under Agreements To Resell ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell	-54756000	usd
CY2022	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	2745132000	usd
CY2021	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	2365631000	usd
CY2020	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	2214870000	usd
CY2022	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2548734000	usd
CY2021	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2748942000	usd
CY2020	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	1815887000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	7631000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	189417000	usd
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	352965000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	230718000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	650347000	usd
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	565028000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	83900000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1771776000	usd
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1313884000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	403424000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	652359000	usd
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	538345000	usd
CY2022	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	383332000	usd
CY2021	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	1233329000	usd
CY2020	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	533379000	usd
CY2022	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	90185000	usd
CY2021	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	99007000	usd
CY2020	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	-25555000	usd
CY2022	ntb	Payments To Acquire Property Plant Equipment And Software PaymentsToAcquirePropertyPlantEquipmentAndSoftware	26876000	usd
CY2021	ntb	Payments To Acquire Property Plant Equipment And Software PaymentsToAcquirePropertyPlantEquipmentAndSoftware	15724000	usd
CY2020	ntb	Payments To Acquire Property Plant Equipment And Software PaymentsToAcquirePropertyPlantEquipmentAndSoftware	20566000	usd
CY2022	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1909000	usd
CY2021	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	4430000	usd
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	292023000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1905662000	usd
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-41709000	usd
CY2022	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-415566000	usd
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	642815000	usd
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	692635000	usd
CY2022	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	usd
CY2020	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	97647000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	usd
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	70000000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3897000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	19754000	usd
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	86640000	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1739000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	87343000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	87285000	usd
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	88932000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-506806000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	535776000	usd
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	546449000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-91439000	usd
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	7536000	usd
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	42707000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-86951000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1111001000	usd
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	735597000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2203497000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3314498000	usd
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2578901000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2116546000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2203497000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3314498000	usd
CY2022Q4	us-gaap	Due From Banks DueFromBanks	2100787000	usd
CY2021Q4	us-gaap	Due From Banks DueFromBanks	2179833000	usd
CY2020Q4	us-gaap	Due From Banks DueFromBanks	3289592000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	15759000	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	23664000	usd
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	24906000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2116546000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2203497000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3314498000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	48643000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	24464000	usd
CY2020	us-gaap	Interest Paid Net InterestPaidNet	39125000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4818000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	463000	usd
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5052000	usd
CY2022	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	1603000	usd
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	704000	usd
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	314000	usd
CY2022	ntb	Debt Securities Available For Sale Transferred To Held To Maturity DebtSecuritiesAvailableForSaleTransferredToHeldToMaturity	998157000	usd
CY2021	ntb	Debt Securities Available For Sale Transferred To Held To Maturity DebtSecuritiesAvailableForSaleTransferredToHeldToMaturity	0	usd
CY2020	ntb	Debt Securities Available For Sale Transferred To Held To Maturity DebtSecuritiesAvailableForSaleTransferredToHeldToMaturity	0	usd
CY2022	ntb	Rightof Use Asset And Liability Obtained In Exchange For Operating Lease Liability RightofUseAssetAndLiabilityObtainedInExchangeForOperatingLeaseLiability	3476000	usd
CY2021	ntb	Rightof Use Asset And Liability Obtained In Exchange For Operating Lease Liability RightofUseAssetAndLiabilityObtainedInExchangeForOperatingLeaseLiability	1575000	usd
CY2020	ntb	Rightof Use Asset And Liability Obtained In Exchange For Operating Lease Liability RightofUseAssetAndLiabilityObtainedInExchangeForOperatingLeaseLiability	323000	usd
CY2022	ntb	Loans Reduction LoansReduction	0	usd
CY2021	ntb	Loans Reduction LoansReduction	0	usd
CY2020	ntb	Loans Reduction LoansReduction	7841000	usd
CY2022	us-gaap	Nature Of Operations NatureOfOperations	<div><span style="color:#800000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:700;line-height:120%">Note 1: Nature of business</span><span style="color:#963634;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:700;line-height:120%"> </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">The Bank of N.T. Butterfield & Son Limited (“Butterfield”, the “Bank” or the “Company”) is incorporated under the laws of Bermuda and has a banking license under the Banks and Deposit Companies Act, 1999 (“the Act”). Butterfield is regulated by the Bermuda Monetary Authority (“BMA”), which operates in accordance with Basel principles.</span></div><div style="text-align:center"><span><br/></span></div><div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">Butterfield is a full service bank and wealth manager headquartered in Hamilton, Bermuda. The Bank operates its business through three geographic segments: Bermuda, the Cayman Islands, and the Channel Islands and the United Kingdom ("UK"), where its principal banking operations are located and where it offers specialized financial services. Butterfield offers banking services, comprised of retail and corporate banking, and wealth management, which consists of trust, private banking, and asset management. In the Bermuda and Cayman Islands segments, Butterfield offers both banking and wealth management. In the Channel Islands and the UK segment, the Bank offers wealth management and residential property lending. Butterfield also has operations in the jurisdictions of The Bahamas, Canada, Mauritius, Singapore and Switzerland, which are included in our Other segment.</span></div>The Bank's common shares trade on the New York Stock Exchange under the symbol "NTB" and on the Bermuda Stock Exchange ("BSX") under the symbol "NTB.BH".
CY2022	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">Critical accounting estimates are those that require management to make subjective or complex judgments about the effect of matters that are inherently uncertain and may change in subsequent periods. Changes that may be required in the underlying assumptions or estimates in these areas could have a material impact on the future financial condition and results of operations. Management believes that the most critical accounting estimates upon which the financial condition depends, and which involve the most complex or subjective decisions or assessments, are as follows:</span></div><div style="margin-top:3pt;padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">Allowance for credit losses</span></div><div style="margin-top:3pt;padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">Fair value of financial instruments</span></div><div style="margin-top:3pt;padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">Impairment of goodwill</span></div><div style="margin-top:3pt;padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">Employee benefit plans</span></div><div style="margin-bottom:3pt;margin-top:3pt;padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">Share-based compensation</span></div>
CY2022	ntb	Threshold Contractual Days Past Due Consumer Loans ThresholdContractualDaysPastDueConsumerLoans	P180D
CY2022Q4	ntb	Threshold Outstanding Balance Consumer Loans ThresholdOutstandingBalanceConsumerLoans	100000	usd
CY2022	ntb	Threshold Contractual Days Past Due Consumer Loans Balance Under100000 ThresholdContractualDaysPastDueConsumerLoansBalanceUnder100000	P180D
CY2022	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Credit-Related Arrangements<div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">In the normal course of business, the Bank enters into various commitments to meet the credit requirements of its customers. Such commitments, which are not included in the consolidated balance sheet, include:</span></div><div style="padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">commitments to extend credit, which represent undertakings to make credit available in the form of loans or other financing for specific amounts and maturities, subject to certain conditions;</span></div><div style="padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">standby letters of credit, which represent irrevocable obligations to make payments to third parties in the event that the customer is unable to meet its financial obligations; and,</span></div><div style="padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:15.71pt">documentary and commercial letters of credit, related primarily to the import of goods by customers, which represent agreements to honor drafts presented by third parties upon completion of specific activities.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:8pt;font-weight:400;line-height:120%">These credit arrangements are subject to the Bank's normal credit standards and collateral is obtained where appropriate. The contractual amounts for these commitments set out in the table in Note 12 represent the maximum payments the Bank would have to make should the contracts be fully drawn, the counterparty default, and any collateral held prove to be of no value. As many of these arrangements will expire or terminate without being drawn upon or are fully collateralized, the contractual amounts do not necessarily represent future cash requirements. The Bank does not carry any liability for these obligations.</span></div>
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	93032000	usd
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	115651000	usd
CY2022Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	258239000	usd
CY2021Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	437644000	usd
CY2022Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	1749516000	usd
CY2021Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	1626538000	usd
CY2022Q4	ntb	Interest Bearing Deposits In Banks And Other Financial Institutions And Cash Equivalents Carrying Value InterestBearingDepositsInBanksAndOtherFinancialInstitutionsAndCashEquivalentsCarryingValue	2007755000	usd
CY2021Q4	ntb	Interest Bearing Deposits In Banks And Other Financial Institutions And Cash Equivalents Carrying Value InterestBearingDepositsInBanksAndOtherFinancialInstitutionsAndCashEquivalentsCarryingValue	2064182000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2100787000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2179833000	usd
CY2022Q4	ntb	Interestbearing Depositsin Banksand Other Financial Institutions Bearing Negligible Interest InterestbearingDepositsinBanksandOtherFinancialInstitutionsBearingNegligibleInterest	157200000	usd
CY2021Q4	ntb	Interestbearing Depositsin Banksand Other Financial Institutions Bearing Negligible Interest InterestbearingDepositsinBanksandOtherFinancialInstitutionsBearingNegligibleInterest	280500000	usd
CY2022Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	884478000	usd
CY2021Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	1198918000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	724000	usd
CY2022Q4	ntb	Equity Securities Fvni Accumulated Gross Unrealized Gainbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedGainbeforeTax	0	usd
CY2022Q4	ntb	Equity Securities Fvni Accumulated Gross Unrealized Lossbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedLossbeforeTax	488000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	236000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	724000	usd
CY2021Q4	ntb	Equity Securities Fvni Accumulated Gross Unrealized Gainbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedGainbeforeTax	0	usd
CY2021Q4	ntb	Equity Securities Fvni Accumulated Gross Unrealized Lossbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedLossbeforeTax	502000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	222000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	2209078000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	14000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	220227000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1988865000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	3495564000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	31163000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	52997000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	3473730000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	3738080000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	540572000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	3197508000	usd
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	2763344000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	57497000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	34729000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	2786112000	usd
CY2021	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Heldtomaturity Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestHeldtomaturitySecurities	0	usd
CY2022	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Heldtomaturity Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestHeldtomaturitySecurities	0	usd
CY2020	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest Heldtomaturity Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestHeldtomaturitySecurities	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	163	security
CY2022Q4	ntb	Debt Securities Available For Sale Securities In Unrealized Loss Positions Percentage Of Portfolio Fair Value DebtSecuritiesAvailableForSaleSecuritiesInUnrealizedLossPositionsPercentageOfPortfolioFairValue	0.998
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	67	security
CY2021Q4	ntb	Debt Securities Available For Sale Securities In Unrealized Loss Positions Percentage Of Portfolio Fair Value DebtSecuritiesAvailableForSaleSecuritiesInUnrealizedLossPositionsPercentageOfPortfolioFairValue	0.736
CY2022Q4	ntb	Debt Securities Available For Sale Securities In Unrealized Loss Positions Percentage Of Fair Value Of Affected Securities DebtSecuritiesAvailableForSaleSecuritiesInUnrealizedLossPositionsPercentageOfFairValueOfAffectedSecurities	0.111
CY2021Q4	ntb	Debt Securities Available For Sale Securities In Unrealized Loss Positions Percentage Of Fair Value Of Affected Securities DebtSecuritiesAvailableForSaleSecuritiesInUnrealizedLossPositionsPercentageOfFairValueOfAffectedSecurities	0.021
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	727936000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	69634000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1256769000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	150593000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1984705000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	220227000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1462005000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	142228000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	1735504000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	398344000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	3197509000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	540572000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	2419357000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	48409000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	137994000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	4588000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	2557351000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	52997000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1568315000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	33554000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	29713000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1175000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	1598028000	usd
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	34729000	usd
CY2022Q4	ntb	Debt Securities Available For Sale Amortized Cost Maturity Allocated And Single Maturity Date Within Three Months DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateWithinThreeMonths	0	usd
CY2022Q4	ntb	Debt Securities Available For Sale Amortized Cost Maturity Allocated And Single Maturity Date Three Through Twelve Months DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateThreeThroughTwelveMonths	167863000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	761716000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	160823000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	0	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	898463000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1988865000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	7631000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	19000	usd
CY2022	ntb	Debt Securities Available For Sale Transferred To Held To Maturity DebtSecuritiesAvailableForSaleTransferredToHeldToMaturity	998157000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	189417000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1563000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	1802000	usd
CY2021	ntb	Debt Securities Available For Sale Transferred To Held To Maturity DebtSecuritiesAvailableForSaleTransferredToHeldToMaturity	0	usd
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	352965000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1275000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	55000	usd
CY2020	ntb	Debt Securities Available For Sale Transferred To Held To Maturity DebtSecuritiesAvailableForSaleTransferredToHeldToMaturity	0	usd
CY2022	ntb	Available For Sale Securities Transfers To Held To Maturity Gains Losses AvailableForSaleSecuritiesTransfersToHeldToMaturityGainsLosses	-99100000	usd
CY2022	us-gaap	Receivable With Imputed Interest Effective Yield Interest Rate ReceivableWithImputedInterestEffectiveYieldInterestRate	0.0591
CY2021	us-gaap	Receivable With Imputed Interest Effective Yield Interest Rate ReceivableWithImputedInterestEffectiveYieldInterestRate	0.0400
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	16600000	usd
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	7600000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	5121391000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	24961000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	5096430000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Fee And Loan In Process FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess	5268743000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	28073000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	5240670000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	971780000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	646456000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	486617000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	684334000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	407111000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1659455000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	265638000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5121391000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	911648000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	605142000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	918171000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	533055000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	508706000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1546154000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	245867000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5268743000	usd
CY2022	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5121391000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5268743000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	28073000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	2670000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	1413000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	6947000	usd
CY2022	ntb	Financing Receivable Excluding Accrued Interest Allowance For Credit Losses Other Adjustments FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossesOtherAdjustments	-248000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	24961000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	34098000	usd
CY2021	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	-3500000	usd
CY2021	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	1671000	usd
CY2021	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	4166000	usd
CY2021	ntb	Financing Receivable Excluding Accrued Interest Allowance For Credit Losses Other Adjustments FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossesOtherAdjustments	-30000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	28073000	usd
CY2022	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	contract
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	contract
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	contract
CY2022Q4	ntb	Financing Receivable Modifications Recorded Investment Accrual FinancingReceivableModificationsRecordedInvestmentAccrual	61474000	usd
CY2022Q4	ntb	Financing Receivable Modifications Recorded Investment Non Accrual FinancingReceivableModificationsRecordedInvestmentNonAccrual	12699000	usd
CY2021Q4	ntb	Financing Receivable Modifications Recorded Investment Accrual FinancingReceivableModificationsRecordedInvestmentAccrual	62878000	usd
CY2021Q4	ntb	Financing Receivable Modifications Recorded Investment Non Accrual FinancingReceivableModificationsRecordedInvestmentNonAccrual	15098000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	427442000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	281301000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	146141000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	409036000	usd
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	270350000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	138686000	usd
CY2022	us-gaap	Depreciation Depreciation	18477000	usd
CY2021	us-gaap	Depreciation Depreciation	27230000	usd
CY2020	us-gaap	Depreciation Depreciation	29213000	usd
CY2019Q4	us-gaap	Goodwill Goodwill	24838000	usd
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	789000	usd
CY2020Q4	us-gaap	Goodwill Goodwill	25627000	usd
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-271000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	25356000	usd
CY2022	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-2464000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	22892000	usd
CY2022Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	3039701000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	6844127000	usd
CY2022Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	9883828000	usd
CY2022Q4	ntb	Contractual Maturities Time Deposits Less Than100000 Three Monthsor Less ContractualMaturitiesTimeDepositsLessThan100000ThreeMonthsorLess	32764000	usd
CY2022Q4	ntb	Contractual Maturities Time Deposits Less Than100000 Three Months Through Six Months ContractualMaturitiesTimeDepositsLessThan100000ThreeMonthsThroughSixMonths	9814000	usd
CY2022Q4	ntb	Contractual Maturities Time Deposits Less Than100000 Six Months Through12 Months ContractualMaturitiesTimeDepositsLessThan100000SixMonthsThrough12Months	12848000	usd
CY2022Q4	ntb	Contractual Maturities Time Deposits Less Than100000after12 Months ContractualMaturitiesTimeDepositsLessThan100000after12Months	11391000	usd
CY2022Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	66817000	usd
CY2022Q4	ntb	Deposits Lessthan100000 DepositsLessthan100000	9950645000	usd
CY2022Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Or Less ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess	2093464000	usd
CY2022Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Through Six Months ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths	447471000	usd
CY2022Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Six Months Through12 Months ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months	423737000	usd
CY2022Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More After12 Months ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months	75759000	usd
CY2022Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	3040431000	usd
CY2022Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	3040431000	usd
CY2022Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	3039701000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	6844127000	usd
CY2022Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	9883828000	usd
CY2022Q4	ntb	Contractual Maturities Time Deposits Three Monthsor Less ContractualMaturitiesTimeDepositsThreeMonthsorLess	2126228000	usd
CY2022Q4	ntb	Contractual Maturities Time Deposits Three Months Through Six Months ContractualMaturitiesTimeDepositsThreeMonthsThroughSixMonths	457285000	usd
CY2022Q4	ntb	Contractual Maturities Time Deposits Six Months Through12 Months ContractualMaturitiesTimeDepositsSixMonthsThrough12Months	436585000	usd
CY2022Q4	ntb	Contractual Maturities Time Depositsafter12 Months ContractualMaturitiesTimeDepositsafter12Months	87150000	usd
CY2022Q4	us-gaap	Time Deposits TimeDeposits	3107248000	usd
CY2022Q4	us-gaap	Deposits Deposits	12991076000	usd
CY2021Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	2820609000	usd
CY2021Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	8104668000	usd
CY2021Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	10925277000	usd
CY2021Q4	ntb	Contractual Maturities Time Deposits Less Than100000 Three Monthsor Less ContractualMaturitiesTimeDepositsLessThan100000ThreeMonthsorLess	30181000	usd
CY2021Q4	ntb	Contractual Maturities Time Deposits Less Than100000 Three Months Through Six Months ContractualMaturitiesTimeDepositsLessThan100000ThreeMonthsThroughSixMonths	8949000	usd
CY2021Q4	ntb	Contractual Maturities Time Deposits Less Than100000 Six Months Through12 Months ContractualMaturitiesTimeDepositsLessThan100000SixMonthsThrough12Months	13094000	usd
CY2021Q4	ntb	Contractual Maturities Time Deposits Less Than100000after12 Months ContractualMaturitiesTimeDepositsLessThan100000after12Months	12426000	usd
CY2021Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	64650000	usd
CY2021Q4	ntb	Deposits Lessthan100000 DepositsLessthan100000	10989927000	usd
CY2021Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Or Less ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess	1627330000	usd
CY2021Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Three Months Through Six Months ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths	578096000	usd
CY2021Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More Six Months Through12 Months ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months	589161000	usd
CY2021Q4	us-gaap	Contractual Maturities Time Deposits100000 Or More After12 Months ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months	85709000	usd
CY2021Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	2880296000	usd
CY2021Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	2880296000	usd
CY2021Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	2820609000	usd
CY2021Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	8104668000	usd
CY2021Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	10925277000	usd
CY2021Q4	ntb	Contractual Maturities Time Deposits Three Monthsor Less ContractualMaturitiesTimeDepositsThreeMonthsorLess	1657511000	usd
CY2021Q4	ntb	Contractual Maturities Time Deposits Three Months Through Six Months ContractualMaturitiesTimeDepositsThreeMonthsThroughSixMonths	587045000	usd
CY2021Q4	ntb	Contractual Maturities Time Deposits Six Months Through12 Months ContractualMaturitiesTimeDepositsSixMonthsThrough12Months	602255000	usd
CY2021Q4	ntb	Contractual Maturities Time Depositsafter12 Months ContractualMaturitiesTimeDepositsafter12Months	98135000	usd
CY2021Q4	us-gaap	Time Deposits TimeDeposits	2944946000	usd
CY2021Q4	us-gaap	Deposits Deposits	13870223000	usd
CY2022Q4	ntb	Weighted Average Interest Rate Demand Deposits WeightedAverageInterestRateDemandDeposits	0.0047
CY2021Q4	ntb	Weighted Average Interest Rate Demand Deposits WeightedAverageInterestRateDemandDeposits	-0.0003
CY2022Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	9883828000	usd
CY2022Q4	us-gaap	Time Deposits TimeDeposits	3107248000	usd
CY2022Q4	us-gaap	Deposits Deposits	12991076000	usd
CY2021Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	10925277000	usd
CY2021Q4	us-gaap	Time Deposits TimeDeposits	2944946000	usd
CY2021Q4	us-gaap	Deposits Deposits	13870223000	usd
CY2022Q4	us-gaap	Purchase Obligation PurchaseObligation	42900000	usd
CY2021Q4	us-gaap	Purchase Obligation PurchaseObligation	53300000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	12584000	usd
CY2022Q4	us-gaap	Other Commitment Due In Next Twelve Months OtherCommitmentDueInNextTwelveMonths	12915000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	25499000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	11114000	usd
CY2022Q4	us-gaap	Other Commitment Due In Second Year OtherCommitmentDueInSecondYear	5936000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	17050000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	10602000	usd
CY2022Q4	us-gaap	Other Commitment Due In Third Year OtherCommitmentDueInThirdYear	3120000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Third Year ContractualObligationDueInThirdYear	13722000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	8572000	usd
CY2022Q4	us-gaap	Other Commitment Due In Fourth Year OtherCommitmentDueInFourthYear	1078000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Fourth Year ContractualObligationDueInFourthYear	9650000	usd
CY2022Q4	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	0	usd
CY2022Q4	us-gaap	Other Commitment Due In Fifth Year OtherCommitmentDueInFifthYear	1084000	usd
CY2022Q4	us-gaap	Contractual Obligation Due In Fifth Year ContractualObligationDueInFifthYear	1084000	usd
CY2022Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	0	usd
CY2022Q4	us-gaap	Other Commitment Due After Fifth Year OtherCommitmentDueAfterFifthYear	1405000	usd
CY2022Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	1405000	usd
CY2022Q4	us-gaap	Purchase Obligation PurchaseObligation	42872000	usd
CY2022Q4	us-gaap	Other Commitment OtherCommitment	25538000	usd
CY2022Q4	us-gaap	Contractual Obligation ContractualObligation	68410000	usd
CY2022Q4	ntb	Commitmentsto Extend Credit Numberof Custodians CommitmentstoExtendCreditNumberofCustodians	1	custodian
CY2022Q4	ntb	Fair Value Disclosure Offbalance Sheet Risks Amount Commitments To Extend Credit Liability FairValueDisclosureOffbalanceSheetRisksAmountCommitmentsToExtendCreditLiability	564324000	usd
CY2021Q4	ntb	Fair Value Disclosure Offbalance Sheet Risks Amount Commitments To Extend Credit Liability FairValueDisclosureOffbalanceSheetRisksAmountCommitmentsToExtendCreditLiability	717077000	usd
CY2022Q4	ntb	Fair Value Disclosure Offbalance Sheet Risks Amount Documentary And Commercial Letters Of Credit Liability FairValueDisclosureOffbalanceSheetRisksAmountDocumentaryAndCommercialLettersOfCreditLiability	2331000	usd
CY2021Q4	ntb	Fair Value Disclosure Offbalance Sheet Risks Amount Documentary And Commercial Letters Of Credit Liability FairValueDisclosureOffbalanceSheetRisksAmountDocumentaryAndCommercialLettersOfCreditLiability	1522000	usd
CY2022Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Amount Liability FairValueDisclosureOffbalanceSheetRisksAmountLiability	566655000	usd
CY2021Q4	us-gaap	Fair Value Disclosure Offbalance Sheet Risks Amount Liability FairValueDisclosureOffbalanceSheetRisksAmountLiability	718599000	usd
CY2022Q4	ntb	Fair Value Disclosure Off Balance Sheet Risks Amount Financing Receivable Allowance For Credit Loss FairValueDisclosureOffBalanceSheetRisksAmountFinancingReceivableAllowanceForCreditLoss	274000	usd
CY2021Q4	ntb	Fair Value Disclosure Off Balance Sheet Risks Amount Financing Receivable Allowance For Credit Loss FairValueDisclosureOffBalanceSheetRisksAmountFinancingReceivableAllowanceForCreditLoss	551000	usd
CY2022Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	254010000	usd
CY2022Q4	ntb	Guarantee Obligations Collateral Amount GuaranteeObligationsCollateralAmount	246824000	usd
CY2022Q4	ntb	Guarantee Obligations Net Value GuaranteeObligationsNetValue	7186000	usd
CY2021Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	280052000	usd
CY2021Q4	ntb	Guarantee Obligations Collateral Amount GuaranteeObligationsCollateralAmount	272756000	usd
CY2021Q4	ntb	Guarantee Obligations Net Value GuaranteeObligationsNetValue	7296000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	7576000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	8248000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2387000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1407000	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	1197000	usd
CY2021	us-gaap	Sublease Income SubleaseIncome	1359000	usd
CY2022	us-gaap	Lease Cost LeaseCost	8766000	usd
CY2021	us-gaap	Lease Cost LeaseCost	8296000	usd
CY2022	ntb	Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag OperatingLeaseIncomeComprehensiveIncomeExtensibleListNotDisclosedFlag	Operating lease income
CY2021	ntb	Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag OperatingLeaseIncomeComprehensiveIncomeExtensibleListNotDisclosedFlag	Operating lease income
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	1012000	usd
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	1243000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3476000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1575000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	7630000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	8402000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	33641000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	39525000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	32965000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	38789000	usd
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y2M26D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y9M21D
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0540
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0525
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	7129000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	6457000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4133000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3357000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3152000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	17735000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	41963000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8998000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	32965000	usd
CY2022	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	243115000	usd
CY2021	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	214539000	usd
CY2020	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	224474000	usd
CY2022	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	259000	usd
CY2021	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	281000	usd
CY2020	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	300000	usd
CY2022	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	6026000	usd
CY2021	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	6847000	usd
CY2020	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	5436000	usd
CY2022	ntb	Amortization Of Fair Value Adjustment On Purchased Loans AmortizationOfFairValueAdjustmentOnPurchasedLoans	508000	usd
CY2021	ntb	Amortization Of Fair Value Adjustment On Purchased Loans AmortizationOfFairValueAdjustmentOnPurchasedLoans	439000	usd
CY2020	ntb	Amortization Of Fair Value Adjustment On Purchased Loans AmortizationOfFairValueAdjustmentOnPurchasedLoans	1046000	usd
CY2022	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	249390000	usd
CY2021	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	221544000	usd
CY2020	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	230656000	usd
CY2022Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	836000	usd
CY2021Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	1095000	usd
CY2020Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	1376000	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	11878000	usd
CY2021Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	11926000	usd
CY2020Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	12204000	usd
CY2022	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
CY2022Q4	us-gaap	Assets Assets	14306062000	usd
CY2021Q4	us-gaap	Assets Assets	15335200000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2396000	usd
CY2022	ntb	Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Other InvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandOther	206587000	usd
CY2022	ntb	Revenues Before Gains Losses RevenuesBeforeGainsLosses	547775000	usd
CY2022	ntb	Noninterest Income Excluding Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Foreign Currency Transaction Gain Loss NoninterestIncomeExcludingInvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandForeignCurrencyTransactionGainLoss	1522000	usd
CY2022	us-gaap	Revenues Revenues	549297000	usd
CY2022	ntb	Non Interest Expense Including Income Tax Expense NonInterestExpenseIncludingIncomeTaxExpense	335277000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	214020000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3128000	usd
CY2021	ntb	Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Other InvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandOther	198107000	usd
CY2021	ntb	Revenues Before Gains Losses RevenuesBeforeGainsLosses	501042000	usd
CY2021	ntb	Noninterest Income Excluding Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Foreign Currency Transaction Gain Loss NoninterestIncomeExcludingInvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandForeignCurrencyTransactionGainLoss	-1361000	usd
CY2021	us-gaap	Revenues Revenues	499681000	usd
CY2021	ntb	Non Interest Expense Including Income Tax Expense NonInterestExpenseIncludingIncomeTaxExpense	337013000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	162668000	usd
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	8491000	usd
CY2020	ntb	Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Other InvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandOther	183859000	usd
CY2020	ntb	Revenues Before Gains Losses RevenuesBeforeGainsLosses	492967000	usd
CY2020	ntb	Noninterest Income Excluding Investment Banking Advisory Brokerageand Underwriting Feesand Commissionsand Foreign Currency Transaction Gain Loss NoninterestIncomeExcludingInvestmentBankingAdvisoryBrokerageandUnderwritingFeesandCommissionsandForeignCurrencyTransactionGainLoss	1222000	usd
CY2020	us-gaap	Revenues Revenues	494189000	usd
CY2020	ntb	Non Interest Expense Including Income Tax Expense NonInterestExpenseIncludingIncomeTaxExpense	346972000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	147217000	usd
CY2022Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	2332899000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	13167000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	12912000	usd
CY2022Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	255000	usd
CY2021Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	2120380000	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	17963000	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	13267000	usd
CY2021Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	4696000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	13167000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	6658000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	6509000	usd
CY2022Q4	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	0	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	9000	usd
CY2022Q4	us-gaap	Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	6500000	usd
CY2022	ntb	Derivative Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag	Spot and forward foreign exchange and currency swaps
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	12912000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	6658000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	6254000	usd
CY2022Q4	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	0	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	352000	usd
CY2022Q4	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	5902000	usd
CY2022Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	255000	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	17963000	usd
CY2021Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	9843000	usd
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	8120000	usd
CY2021Q4	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	0	usd
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2021Q4	us-gaap	Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	8120000	usd
CY2021	ntb	Derivative Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag	Spot and forward foreign exchange and currency swaps
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	13267000	usd
CY2021Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	9843000	usd
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	3424000	usd
CY2021Q4	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	0	usd
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	818000	usd
CY2021Q4	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	2606000	usd
CY2021Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	4696000	usd
CY2022	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-3318000	usd
CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	18043000	usd
CY2020	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-15006000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-1123000	usd
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	5495000	usd
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-4469000	usd
CY2022	ntb	Share Based Compensation Arrangement By Share Based Payment Award Options Average Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAverageOutstandingNumber	0	shares
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	usd
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	usd
CY2021	ntb	Share Based Compensation Arrangement By Share Based Payment Award Options Average Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAverageOutstandingNumber	0	shares
CY2020	ntb	Share Based Compensation Arrangement By Share Based Payment Award Options Average Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAverageOutstandingNumber	100000	shares
CY2022Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	1100000	shares
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	1000000	shares
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	900000	shares
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	214020000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	214020000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	162668000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	162668000	usd
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	147217000	usd
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	147217000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	usd
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	38.21
CY2021	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	36.93
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2192000	usd
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	usd
CY2022Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	24466000	usd
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	13753000	usd
CY2018Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	2500000	shares
CY2019Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	125000000	usd
CY2019Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	3500000	shares
CY2021Q1	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	2000000	shares
CY2022Q1	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	2000000	shares
CY2022	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	102000	shares
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	102000	shares
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	534828	shares
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	3452000	shares
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.10
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	3897268	usd
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	19753336	usd
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	86639889	usd
CY2022	ntb	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Excluding Transfer To Held To Maturity OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentExcludingTransferToHeldToMaturity	-252535000	usd
CY2021	ntb	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Excluding Transfer To Held To Maturity OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentExcludingTransferToHeldToMaturity	-75237000	usd
CY2020	ntb	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Excluding Transfer To Held To Maturity OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentExcludingTransferToHeldToMaturity	37417000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-252535000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-75237000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	37417000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.76
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.76
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.76
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.76
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.76
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.76
CY2022Q4	ntb	Tier One Common Equity TierOneCommonEquity	983342000	usd
CY2021Q4	ntb	Tier One Common Equity TierOneCommonEquity	896263000	usd
CY2022Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	983342000	usd
CY2021Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	896263000	usd
CY2022Q4	us-gaap	Tier Two Risk Based Capital TierTwoRiskBasedCapital	183640000	usd
CY2021Q4	us-gaap	Tier Two Risk Based Capital TierTwoRiskBasedCapital	183998000	usd
CY2022Q4	us-gaap	Capital Capital	1166982000	usd
CY2021Q4	us-gaap	Capital Capital	1080261000	usd
CY2022Q4	us-gaap	Risk Weighted Assets RiskWeightedAssets	4843370000	usd
CY2021Q4	us-gaap	Risk Weighted Assets RiskWeightedAssets	5101474000	usd
CY2022Q4	ntb	Leverage Ratio Exposure Measure LeverageRatioExposureMeasure	14774309000	usd
CY2021Q4	ntb	Leverage Ratio Exposure Measure LeverageRatioExposureMeasure	15921624000	usd
CY2022Q4	ntb	Tier One Common Equity Risk Based Capitalto Risk Weighted Assets TierOneCommonEquityRiskBasedCapitaltoRiskWeightedAssets	0.203
CY2022Q4	ntb	Tier One Common Equity Risk Based Capital Requiredfor Capital Adequacyto Risk Weighted Assets TierOneCommonEquityRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.100
CY2021Q4	ntb	Tier One Common Equity Risk Based Capitalto Risk Weighted Assets TierOneCommonEquityRiskBasedCapitaltoRiskWeightedAssets	0.176
CY2021Q4	ntb	Tier One Common Equity Risk Based Capital Requiredfor Capital Adequacyto Risk Weighted Assets TierOneCommonEquityRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.100
CY2022Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.203
CY2022Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.115
CY2021Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.176
CY2021Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.115
CY2022Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.241
CY2022Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.135
CY2021Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.212
CY2021Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.135
CY2022Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.067
CY2022Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.050
CY2021Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.056
CY2021Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.050
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3223000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2818000	usd
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2382000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	459000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	305000	usd
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CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3682000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3123000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2378000	usd
CY2022	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	4349000	usd
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CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.020
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CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	283000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.001
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	408000	usd
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CY2022	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0
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CY2020	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0
CY2022	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	125000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.001
CY2021	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-1217000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.007
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0
CY2022	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1364000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.006
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	585000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.004
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-582000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.004
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	206000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	212000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-75000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3682000	usd
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.017
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3123000	usd
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.019
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2378000	usd
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.016
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	5863000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	8269000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	19000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	0	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	5882000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	8269000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3478000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4842000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2404000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3427000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	477000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	735000	usd
CY2022Q4	ntb	Deferred Tax Liabilities Allowance For Compensated Absence DeferredTaxLiabilitiesAllowanceForCompensatedAbsence	0	usd
CY2021Q4	ntb	Deferred Tax Liabilities Allowance For Compensated Absence DeferredTaxLiabilitiesAllowanceForCompensatedAbsence	27000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	477000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	762000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1927000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2665000	usd

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$NTB
Bank of N.T. Butterfield & Son Ltd Stock $ntb

2022 Q4 Form 20-F Financial Statement

#000165324223000007 Filed on February 22, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTB Bank of N.T. Butterfield & Son Ltd Stock $ntb

2022 Q4 Form 20-F Financial Statement

#000165324223000007 Filed on February 22, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTB
Bank of N.T. Butterfield & Son Ltd Stock $ntb