$COLB
COLUMBIA BANKING SYSTEM, INC. Stock $colb

$colb Overview Financials Valuation SEC Filings Company Website

2023 Q2 Form 10-Q Financial Statement

#000088734323000220 Filed on May 09, 2023

Income Statement

Concept	2023 Q2	2023 Q1	2022 Q4
Revenue	$675.7M	$476.0M
YoY Change	349.55%	220.97%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$44.07M	$19.04M	$13.05M
YoY Change	234.76%	101.83%	10.57%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$191.8M	$101.3M
YoY Change	6600.0%	4756.26%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$179.1M	-$18.92M	$87.12M
YoY Change	138.84%	-125.88%	55.57%
Income Tax	$45.70M	-$4.886M	$18.21M
% Of Pretax Income	25.52%		20.91%
Net Earnings	$133.4M	-$14.04M	$68.91M
YoY Change	126.8%	-124.4%	60.62%
Net Earnings / Revenue	19.74%	-2.95%
Basic Earnings Per Share	$0.64	-$0.09
Diluted Earnings Per Share	$0.64	-$0.09	$0.88
COMMON SHARES
Basic Shares Outstanding	208.5M shares	78.68M shares	78.65M shares
Diluted Shares Outstanding	208.5M shares	156.4M shares

Balance Sheet

Concept	2023 Q2	2023 Q1	2022 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$3.407B	$3.635B	$291.7M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$488.0M	$375.2M	$160.6M
YoY Change	189.44%	120.63%	-6.72%
Goodwill	$1.000B	$1.030B	$823.2M
YoY Change	21.48%	25.14%	0.0%
Intangibles	$666.8M	$702.3M	$25.95M
YoY Change	2112.22%	2070.39%	-25.1%
Long-Term Investments
YoY Change
Other Assets	$362.9M	$351.2M
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$53.59B	$53.99B	$20.27B
YoY Change	160.61%	157.56%	-3.24%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$132.1M	$140.6M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$294.9M	$50.00M	$95.17M
YoY Change	319.22%	13.09%	10.66%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$427.0M	$411.7M	$95.17M
YoY Change	506.99%	831.18%	10.66%
LONG-TERM LIABILITIES
Long-Term Debt	$6.671B	$6.356B	$20.31M
YoY Change	32745.3%	31193.88%	1.55%
Other Long-Term Liabilities	$831.1M	$755.7M	$271.4M
YoY Change	212.14%	225.58%	16.5%
Total Long-Term Liabilities	$7.502B	$7.111B	$291.8M
YoY Change	2517.89%	2717.44%	15.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$427.0M	$411.7M	$95.17M
Total Long-Term Liabilities	$7.502B	$7.111B	$291.8M
Total Liabilities	$48.76B	$49.11B	$18.05B
YoY Change	166.16%	163.98%	-1.66%
SHAREHOLDERS EQUITY
Retained Earnings	-$545.8M	-$603.7M	$850.0M
YoY Change	-171.49%	-182.89%	22.44%
Common Stock	$5.793B	$5.789B	$1.944B
YoY Change	199.34%	199.76%	0.74%
Preferred Stock
YoY Change
Treasury Stock (at cost)			$70.83M
YoY Change			0.0%
Treasury Stock Shares			2.184M shares
Shareholders Equity	$4.828B	$4.885B	$2.213B
YoY Change
Total Liabilities & Shareholders Equity	$53.59B	$53.99B	$20.27B
YoY Change	160.61%	157.56%	-3.24%

Cashflow Statement

Concept	2023 Q2	2023 Q1	2022 Q4
OPERATING ACTIVITIES
Net Income	$133.4M	-$14.04M	$68.91M
YoY Change	126.8%	-124.4%	60.62%
Depreciation, Depletion And Amortization	$44.07M	$19.04M	$13.05M
YoY Change	234.76%	101.83%	10.57%
Cash From Operating Activities	$266.3M	-$38.97M	$76.97M
YoY Change	168.51%	-162.47%	67.32%
INVESTING ACTIVITIES
Capital Expenditures	$26.00K	$3.486M	$1.653M
YoY Change	-101.43%	91.85%	-191.83%
Acquisitions
YoY Change
Other Investing Activities	$8.528M	-$74.00K	$165.5M
YoY Change	-102.7%	-99.94%	-139.11%
Cash From Investing Activities	$8.502M	$461.3M	$163.8M
YoY Change	-102.67%	-441.12%	-138.54%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-502.8M	$1.918B	-266.7M
YoY Change	48.12%	769.46%	-187.1%
NET CHANGE
Cash From Operating Activities	266.3M	-$38.97M	76.97M
Cash From Investing Activities	8.502M	$461.3M	163.8M
Cash From Financing Activities	-502.8M	$1.918B	-266.7M
Net Change In Cash	-228.0M	$2.341B	-25.93M
YoY Change	-59.17%	1483.99%	-64.38%
FREE CASH FLOW
Cash From Operating Activities	$266.3M	-$38.97M	$76.97M
Capital Expenditures	$26.00K	$3.486M	$1.653M
Free Cash Flow	$266.3M	-$42.45M	$75.31M
YoY Change	163.64%	-170.1%	57.56%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000887343
CY2023Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2023Q1	dei	Amendment Flag AmendmentFlag	false
CY2023Q1	dei	Document Type DocumentType	10-Q
CY2023Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2023Q1	dei	Document Period End Date DocumentPeriodEndDate	2023-03-31
CY2023Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2023Q1	dei	Entity File Number EntityFileNumber	000-20288
CY2023Q1	dei	Entity Registrant Name EntityRegistrantName	COLUMBIA BANKING SYSTEM, INC.
CY2023Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WA
CY2023Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	91-1422237
CY2023Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	1301 A Street
CY2023Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Tacoma
CY2023Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	WA
CY2023Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	98402-2156
CY2023Q1	dei	City Area Code CityAreaCode	253
CY2023Q1	dei	Local Phone Number LocalPhoneNumber	305-1900
CY2023Q1	dei	Security12b Title Security12bTitle	Common Stock, No Par Value
CY2023Q1	dei	Trading Symbol TradingSymbol	COLB
CY2023Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2023Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2023Q1	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	208458075	shares
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CY2022Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2278000	usd
CY2023Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	13427000	usd
CY2022Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10155000	usd
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	342818000	usd
CY2022Q1	us-gaap	Noninterest Expense NoninterestExpense	182430000	usd
CY2023Q1	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-18924000	usd
CY2022Q1	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	121498000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4886000	usd
CY2022Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30341000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-14038000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	91157000	usd
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.09
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.09
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.70
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156383000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	129159000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	156383000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129693000	shares
CY2023Q1	colb	Merger Share Exchange Ratio MergerShareExchangeRatio	0.5958
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-14038000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	91157000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	145438000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-237046000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	37827000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-60968000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	2000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	107611000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-176079000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	25812000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-12703000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	6711000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	-3267000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	19101000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-9436000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-24000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-6000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-18000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	126730000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-185515000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	112692000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-94358000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2749270000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	91157000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-185515000	usd
CY2022Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2454000	usd
CY2022Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	4037000	usd
CY2022Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	usd
CY2022Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.35
CY2022Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	45731000	usd
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2607598000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	78591000	usd
CY2022Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-124391000	usd
CY2022Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2283000	usd
CY2022Q2	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	72000	usd
CY2022Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	54000	usd
CY2022Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.35
CY2022Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	45787000	usd
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2518276000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	84040000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-141413000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2517000	usd
CY2022Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	41000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	usd
CY2022Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.35
CY2022Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	45865000	usd
CY2022Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2417514000	usd
CY2022Q4	us-gaap	Net Income Loss NetIncomeLoss	82964000	usd
CY2022Q4	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	22696000	usd
CY2022Q4	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2499000	usd
CY2022Q4	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	13000	usd
CY2022Q4	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	usd
CY2022Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.35
CY2022Q4	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	45834000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2479826000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-14038000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	126730000	usd
CY2023Q1	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	78863112	shares
CY2023Q1	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	2337632000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	2337632000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5644000	usd
CY2023Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	5216000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.35
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	45855000	usd
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4884723000	usd
CY2023Q1	colb	Merger Share Exchange Ratio MergerShareExchangeRatio	0.5958
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-14038000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	91157000	usd
CY2023Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	7668000	usd
CY2022Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1106000	usd
CY2023Q1	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	0	usd
CY2022Q1	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	2000	usd
CY2023Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	105539000	usd
CY2022Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	4804000	usd
CY2023Q1	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	491000	usd
CY2022Q1	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	2122000	usd
CY2023Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	19043000	usd
CY2022Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	7613000	usd
CY2023Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	305000	usd
CY2022Q1	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	571000	usd
CY2023Q1	colb	Increase In Mortgage Servicing Rights Carried At Fair Value IncreaseInMortgageServicingRightsCarriedAtFairValue	1601000	usd
CY2022Q1	colb	Increase In Mortgage Servicing Rights Carried At Fair Value IncreaseInMortgageServicingRightsCarriedAtFairValue	7390000	usd
CY2023Q1	colb	Change In Fair Value Of Residential Mortgage Servicing Rights Carried At Fair Value ChangeInFairValueOfResidentialMortgageServicingRightsCarriedAtFairValue	-7818000	usd
CY2022Q1	colb	Change In Fair Value Of Residential Mortgage Servicing Rights Carried At Fair Value ChangeInFairValueOfResidentialMortgageServicingRightsCarriedAtFairValue	34802000	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	5644000	usd
CY2022Q1	us-gaap	Share Based Compensation ShareBasedCompensation	2454000	usd
CY2023Q1	colb	Increase Decreasein Equity Securities IncreaseDecreaseinEquitySecurities	-131000	usd
CY2022Q1	colb	Increase Decreasein Equity Securities IncreaseDecreaseinEquitySecurities	413000	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	2416000	usd
CY2022Q1	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-2661000	usd
CY2023Q1	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	2996000	usd
CY2022Q1	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	4458000	usd
CY2023Q1	us-gaap	Increase Decrease In Mortgage Loans Held For Sale IncreaseDecreaseInMortgageLoansHeldForSale	82000	usd
CY2022Q1	us-gaap	Increase Decrease In Mortgage Loans Held For Sale IncreaseDecreaseInMortgageLoansHeldForSale	-11055000	usd
CY2023Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	131726000	usd
CY2022Q1	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	649122000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	155574000	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	683347000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	51404000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-167911000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-119989000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2097000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-38967000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	275325000	usd
CY2023Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	919233000	usd
CY2022Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	131869000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1243601000	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	126011000	usd
CY2023Q1	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	188066000	usd
CY2022Q1	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	0	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	90695000	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	28000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	59389000	usd
CY2022Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	470337000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	20502000	usd
CY2022Q1	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	44549000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3486000	usd
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3736000	usd
CY2023Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2028000	usd
CY2022Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1111000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	-274587000	usd
CY2022Q1	us-gaap	Payments For Proceeds From Businesses And Interest In Affiliates PaymentsForProceedsFromBusinessesAndInterestInAffiliates	0	usd
CY2023Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-74000	usd
CY2022Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-104000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	461313000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-434139000	usd
CY2023Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-672737000	usd
CY2022Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	104906000	usd
CY2023Q1	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	14000000	usd
CY2022Q1	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	0	usd
CY2023Q1	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-107747000	usd
CY2022Q1	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	7292000	usd
CY2023Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	5945000000	usd
CY2022Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2023Q1	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	3181522000	usd
CY2022Q1	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	usd
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	45582000	usd
CY2022Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	45532000	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	5216000	usd
CY2022Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4037000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1918196000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	62629000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2340542000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-96185000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1294643000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2761621000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3635185000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2665436000	usd
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	83836000	usd
CY2022Q1	us-gaap	Interest Paid Net InterestPaidNet	7667000	usd
CY2023Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	11407000	usd
CY2022Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	6051000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	107611000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-176079000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	19101000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-9436000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-18000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	0	usd
CY2023Q1	colb	Number Of Wholly Owned Trusts NumberOfWhollyOwnedTrusts	23	trust
CY2023Q1	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Business Combinations</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">-The Company applies the acquisition method of accounting for business combinations. Under the acquisition method, the acquiring entity recognizes the assets acquired and liabilities assumed at their acquisition date fair values. Management utilizes prevailing valuation techniques appropriate for the asset or liability being measured in determining these fair values. This method often involves estimates based on third party valuations or internal valuations based on discounted cash flow analyses or other valuation techniques, all of which are inherently subjective. Any excess of the purchase price over the fair value of net assets and other identifiable intangible assets acquired is recorded as goodwill. Assets acquired and liabilities assumed from contingencies must also be recognized at fair value if the fair value can be determined during the measurement period. Acquisition‑related costs, including conversion and restructuring charges, are expensed as incurred. Fair values are subject to refinement over the measurement period, not to exceed one year after the closing date.</span>
CY2023Q1	colb	Cash And Cash Equivalents General Maturity CashAndCashEquivalentsGeneralMaturity	P90D
CY2023Q1	us-gaap	Revenue Recognition Interest RevenueRecognitionInterest	<div style="margin-bottom:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Revenue Recognition</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">-</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company's revenue within the contracts with customers guidance are presented within non-interest income and include service charges on deposits, card-based fees, merchant fee, and financial services and trust revenue. These revenues are recognized when obligations under the terms of a contract with customers are satisfied. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. When the amount of consideration is variable, the Company will only recognize revenue to the extent that it is probable that the cumulative amount recognized will not be subject to a significant reversal in the future. Substantially all of the Company's contracts with customers have expected durations of one year or less and payments are typically due when or as the services are rendered or shortly thereafter. When third parties are involved in providing services to customers, the Company recognizes revenue on a gross basis when it has control over those services being provided to the customer; otherwise, revenue is recognized for the net amount of any fee or commission.</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Revenue is segregated based on the nature of product and services offered as part of contractual arrangements. Revenue from contracts with customers is broadly segregated as follows:</span></div><div style="padding-left:72pt;text-indent:-13.5pt"><span><br/></span></div><div style="padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.5pt">Service charges on deposits</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> consists primarily of fees earned from deposit customers for account maintenance and transaction-based and overdraft services. Account maintenance fees consist primarily of account fees and analyzed account fees charged on deposit accounts on a monthly basis. The performance obligation is satisfied, and the fees are recognized on a monthly basis as the service period is completed. Transaction-based fees on deposit accounts are charged to deposit customers for specific services provided to the customer, such as non-sufficient funds fees, overdraft fees, and wire fees. The performance obligation is completed as the transaction occurs and the fees are recognized at the time each specific service is provided to the customer. </span></div><div style="padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.5pt">Card-based fees</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> are comprised of debit and credit card income, ATM fees, and merchant services income. Debit and credit card income is primarily comprised of interchange fees earned when the Bank's customers' debit and credit cards are processed through card payment networks. The performance obligation is satisfied, and the fees are earned when the cost of the transaction is charged to the cardholders' debit or credit card. Certain expenses and rebates directly related to the credit and debit card interchange contract are recorded on a net basis with the interchange income. </span></div><div style="padding-left:36pt;text-indent:-18pt"><span><br/></span></div><div style="padding-left:36pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.5pt">Finance services and trust revenue</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> consists of brokerage revenue related to third party revenue share agreements for commissions on brokerage services and trust revenue from trust administration and investment management services. Brokerage revenue is recognized when cash payment is received by the third party based on the net revenues earned on the products and services purchased in the month prior. Trust revenue is recognized monthly and based on the portfolio values at the end of the prior month. </span></div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%;padding-left:14.5pt">Other non-interest income </span>includes a variety of other revenue streams including residential mortgage banking, net revenue, security gains and losses, loan sales gain and losses, BOLI income revenue, swap revenue, merchant fee income, and miscellaneous consumer fees. These revenue streams are not in the scope of revenue from contracts with customers guidance. Revenue is recognized when, or as, the performance obligation is satisfied. Inherent variability in the transaction price is not recognized until the uncertainty affecting the variability is resolved.
CY2023Q1	us-gaap	Derivatives Methods Of Accounting Nonhedging Derivatives DerivativesMethodsOfAccountingNonhedgingDerivatives	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Derivatives</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">-</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Bank enters into forward delivery contracts to sell residential mortgage loans or mortgage-backed securities to broker/dealers at specific prices and dates in order to hedge the interest rate risk in its portfolio of mortgage loans held for sale and its residential mortgage loan commitments. The commitments to originate mortgage loans held for sale and the related forward delivery contracts are considered derivatives. The Bank also executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are hedged by simultaneously entering into an offsetting interest rate swap that the Bank executes with a third party, such that the Bank minimizes its net risk exposure. The Bank also uses certain derivative financial instruments to offset changes in the value of its MSR. These derivatives consist primarily of interest rate futures and forward settling mortgage-backed securities. The Company considers all free-standing derivatives as economic hedges and recognizes these derivatives as either assets or liabilities in the balance sheet, and the Company requires measurement of those instruments at fair value through adjustments to current earnings. None of the Company's derivatives are designated as hedging instruments.</span>The fair value of the derivative residential mortgage loan commitments is estimated using the net present value of expected future cash flows. Assumptions used include pull-through rate assumption based on historical information, current mortgage interest rates, the stage of completion of the underlying application and underwriting process, direct origination costs yet to be incurred, the time remaining until the expiration of the derivative loan commitment, and the expected net future cash flows related to the associated servicing of the loan.
CY2023Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	3175000	usd
CY2023Q1	colb	Business Combination Acquisition Related Costs Communication BusinessCombinationAcquisitionRelatedCostsCommunication	20000000	usd
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	9646277000	usd
CY2023Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	94099000	usd
CY2023Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	490776000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	9249600000	usd
CY2023Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	2432000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	743000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3738281000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	234000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	542349000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3196166000	usd
CY2022Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	2476000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	721000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	3197000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	313726000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	7021000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2811915000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	483755000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	3125641000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	490776000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1486583000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	143817000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1660143000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	398532000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	3146726000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	542349000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	439	branches
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	473	branches
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	46775000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	46157000	usd
CY2023Q1	us-gaap	Heldtomaturity Securities Debt Maturities Next Rolling Twelve Months Amortized Cost HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost	0	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities Next Rolling Twelve Months Fair Value HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	0	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1654173000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1646542000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	4000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	4000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	2924904000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	2870751000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	2000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	2000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	5020425000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	4686150000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	2426000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	3169000	usd
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	9646277000	usd
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	9249600000	usd
CY2023Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	2432000	usd
CY2023Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	3175000	usd
CY2023Q1	colb	Loans Receivable Commercial Re Nonowneroccupiedtermnet LoansReceivableCommercialRENonowneroccupiedtermnet	6353550000	usd
CY2022Q4	colb	Loans Receivable Commercial Re Nonowneroccupiedtermnet LoansReceivableCommercialRENonowneroccupiedtermnet	3894840000	usd
CY2023Q1	colb	Pledged Assets Not Separately Reported Securities Pledged For State And Local Governments PledgedAssetsNotSeparatelyReportedSecuritiesPledgedForStateAndLocalGovernments	1659206000	usd
CY2023Q1	colb	Pledged Assets Separately Reported Securities Pledged For State And Local Governments At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForStateAndLocalGovernmentsAtFairValue	1529789000	usd
CY2023Q1	colb	Pledged Assets Not Separately Reported Repurchase Agreement PledgedAssetsNotSeparatelyReportedRepurchaseAgreement	635851000	usd
CY2023Q1	colb	Pledged Assets Separately Reported Repurchase Agreement PledgedAssetsSeparatelyReportedRepurchaseAgreement	577667000	usd
CY2023Q1	colb	Financial Instruments Other At Amortized Cost FinancialInstrumentsOtherAtAmortizedCost	2564019000	usd
CY2023Q1	us-gaap	Financial Instruments Owned Other At Fair Value FinancialInstrumentsOwnedOtherAtFairValue	2375610000	usd
CY2023Q1	colb	Financial Instruments Owned At Amortized Cost FinancialInstrumentsOwnedAtAmortizedCost	4859076000	usd
CY2023Q1	us-gaap	Financial Instruments Owned At Fair Value FinancialInstrumentsOwnedAtFairValue	4483066000	usd
CY2023Q1	colb	Loans Receivable Commercial Re Owner Occupied Term Net LoansReceivableCommercialREOwnerOccupiedTermNet	5156848000	usd
CY2022Q4	colb	Loans Receivable Commercial Re Owner Occupied Term Net LoansReceivableCommercialREOwnerOccupiedTermNet	2567761000	usd
CY2023Q1	colb	Loans Receivable Commercial Re Multifamily Net LoansReceivableCommercialREMultifamilyNet	5590587000	usd
CY2022Q4	colb	Loans Receivable Commercial Re Multifamily Net LoansReceivableCommercialREMultifamilyNet	5285791000	usd
CY2023Q1	colb	Loans Receivable Commercial Re Construction Development Net LoansReceivableCommercialREConstructionDevelopmentNet	1467561000	usd
CY2022Q4	colb	Loans Receivable Commercial Re Construction Development Net LoansReceivableCommercialREConstructionDevelopmentNet	1077346000	usd
CY2023Q1	colb	Loans Receivable Commercial Re Residential Development Net LoansReceivableCommercialREResidentialDevelopmentNet	440667000	usd
CY2022Q4	colb	Loans Receivable Commercial Re Residential Development Net LoansReceivableCommercialREResidentialDevelopmentNet	200838000	usd
CY2023Q1	colb	Loans Receivable Commercial Term LoansReceivableCommercialTerm	5906774000	usd
CY2022Q4	colb	Loans Receivable Commercial Term LoansReceivableCommercialTerm	3029547000	usd
CY2023Q1	colb	Loans Receivable Commercial Loc And Other LoansReceivableCommercialLocAndOther	2184762000	usd
CY2022Q4	colb	Loans Receivable Commercial Loc And Other LoansReceivableCommercialLocAndOther	960054000	usd
CY2023Q1	colb	Loans Receivable Commercial Leases And Equipment Finance LoansReceivableCommercialLeasesAndEquipmentFinance	1746267000	usd
CY2022Q4	colb	Loans Receivable Commercial Leases And Equipment Finance LoansReceivableCommercialLeasesAndEquipmentFinance	1706172000	usd
CY2023Q1	colb	Loan Receivable Residential Mortgage Net LoanReceivableResidentialMortgageNet	6187964000	usd
CY2022Q4	colb	Loan Receivable Residential Mortgage Net LoanReceivableResidentialMortgageNet	5647035000	usd
CY2023Q1	colb	Loan Receivable Residential Hell Net LoanReceivableResidentialHELLNet	1870002000	usd
CY2022Q4	colb	Loan Receivable Residential Hell Net LoanReceivableResidentialHELLNet	1631965000	usd
CY2023Q1	colb	Loan Receivable Consumer Other Net LoanReceivableConsumerOtherNet	186298000	usd
CY2022Q4	colb	Loan Receivable Consumer Other Net LoanReceivableConsumerOtherNet	154632000	usd
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	37091280000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	26155981000	usd
CY2023Q1	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	83700000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	84700000	usd
CY2023Q1	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	711700000	usd
CY2022Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	6100000	usd
CY2023Q1	us-gaap	Direct Financing Lease Interest Income DirectFinancingLeaseInterestIncome	4700000	usd
CY2022Q1	us-gaap	Direct Financing Lease Interest Income DirectFinancingLeaseInterestIncome	5100000	usd
CY2023Q1	colb	Length Of Time Projected By Model LengthOfTimeProjectedByModel	P10Y
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	301135000	usd
CY2023Q1	us-gaap	Financing Receivable Purchased With Credit Deterioration Allowance For Credit Loss At Acquisition Date FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate	26492000	usd
CY2023Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	106498000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	20269000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3608000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	16661000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	417464000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	14221000	usd
CY2023Q1	colb	Off Balance Sheet Credit Loss Liability Acquired During The Period OffBalanceSheetCreditLossLiabilityAcquiredDuringThePeriod	5767000	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-959000	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	19029000	usd
CY2023Q1	colb	Financing Receivable Allowance For Credit Loss And Unfunded Lending Commitments Total FinancingReceivableAllowanceForCreditLossAndUnfundedLendingCommitmentsTotal	436493000	usd
CY2023Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	88400000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	248412000	usd
CY2022Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5696000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	8910000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3366000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	5544000	usd
CY2022Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	248564000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	12767000	usd
CY2022Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	151000	usd
CY2022Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	12918000	usd
CY2022Q1	colb	Financing Receivable Allowance For Credit Loss And Unfunded Lending Commitments Total FinancingReceivableAllowanceForCreditLossAndUnfundedLendingCommitmentsTotal	261482000	usd
CY2023Q1	colb	Days Past Due On Leases And Equipment Finance DaysPastDueOnLeasesAndEquipmentFinance	P181D
CY2023Q1	colb	Interest Income On Non Accrual Loans And Leases InterestIncomeOnNonAccrualLoansAndLeases	0	usd
CY2022Q1	colb	Interest Income On Non Accrual Loans And Leases InterestIncomeOnNonAccrualLoansAndLeases	0	usd
CY2022Q1	colb	Interest Income On Non Accrual Loans And Leases InterestIncomeOnNonAccrualLoansAndLeases	0	usd
CY2023Q1	colb	Interest Income On Non Accrual Loans And Leases InterestIncomeOnNonAccrualLoansAndLeases	0	usd
CY2023Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	57913000	usd
CY2023Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	37091280000	usd
CY2023Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	57900000	usd
CY2023Q1	colb	Financing Receivable Allowance For Non Accrual Credit Losses FinancingReceivableAllowanceForNonAccrualCreditLosses	30400000	usd
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CY2022Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	6855556000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2022796000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	2421887000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1250979000	usd
CY2022Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3127311000	usd
CY2022Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	3522507000	usd
CY2022Q4	colb	Financing Receivable Revolving To Non Revolving Loans Amortized Cost FinancingReceivableRevolvingToNonRevolvingLoansAmortizedCost	128728000	usd
CY2022Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	26155981000	usd
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CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	49816000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	4745000	usd
CY2023Q1	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	710230000	usd
CY2023Q1	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	710230000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12660000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12660000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	764791000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	62476000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	702315000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	104017000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	123735000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	108589000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	94502000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	80415000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	191057000	usd
CY2023Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	702315000	usd
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CY2021Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	123615000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	1601000	usd
CY2022Q1	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	7390000	usd
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CY2022Q1	us-gaap	Servicing Asset At Fair Value Other Changes In Fair Value ServicingAssetAtFairValueOtherChangesInFairValue	-5347000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-2937000	usd
CY2022Q1	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	40149000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	178800000	usd
CY2022Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	165807000	usd
CY2023Q1	colb	Balance Of Loans Serviced For Others BalanceOfLoansServicedForOthers	12914046000	usd
CY2022Q4	colb	Balance Of Loans Serviced For Others BalanceOfLoansServicedForOthers	13020189000	usd
CY2023Q1	colb	Mortgage Servicing Rights Percentage Of Serviced Loans MortgageServicingRightsPercentageOfServicedLoans	0.0138
CY2022Q4	colb	Mortgage Servicing Rights Percentage Of Serviced Loans MortgageServicingRightsPercentageOfServicedLoans	0.0142
CY2023Q1	us-gaap	Contractually Specified Servicing Fees Late Fees And Ancillary Fees Earned In Exchange For Servicing Financial Assets ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets	9400000	usd
CY2022Q1	us-gaap	Contractually Specified Servicing Fees Late Fees And Ancillary Fees Earned In Exchange For Servicing Financial Assets ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets	9100000	usd
CY2023Q1	us-gaap	Other Borrowings OtherBorrowings	6000000000	usd
CY2022Q4	us-gaap	Other Borrowings OtherBorrowings	906200000	usd
CY2023Q1	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	5900000000	usd
CY2022Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	906200000	usd
CY2023Q1	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	50000000	usd
CY2023Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	50000000	usd
CY2023Q1	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0638
CY2022Q1	colb	Standby Letters Of Credit Financial Guaranteesrequiredtoperformon StandbyLettersOfCreditFinancialGuaranteesrequiredtoperformon	0	usd
CY2023Q1	colb	Standby Letters Of Credit Financial Guaranteesrequiredtoperformon StandbyLettersOfCreditFinancialGuaranteesrequiredtoperformon	0	usd
CY2023Q1	colb	Standby Letters Of Credit Financial Guaranteesrequiredtoperformon StandbyLettersOfCreditFinancialGuaranteesrequiredtoperformon	0	usd
CY2022Q1	colb	Standby Letters Of Credit Financial Guaranteesrequiredtoperformon StandbyLettersOfCreditFinancialGuaranteesrequiredtoperformon	0	usd
CY2023Q1	colb	Standby Letters Of Credit Expires Within One Year StandbyLettersOfCreditExpiresWithinOneYear	131700000	usd
CY2023Q1	colb	Standby Letters Of Credit Expire Thereafter StandbyLettersOfCreditExpireThereafter	24200000	usd
CY2023Q1	colb	Mortgage Loans On Real Estate Repurchase Reserve Liability MortgageLoansOnRealEstateRepurchaseReserveLiability	200000	usd
CY2023Q1	colb	Gnma Loans Past Due By90 Days But Not Yet Repurchased GNMALoansPastDueBy90DaysButNotYetRepurchased	5400000	usd
CY2023Q1	colb	Prior Bankruptcy Recoveries By Plaintiffs PriorBankruptcyRecoveriesByPlaintiffs	110000000	usd
CY2023Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	3900000	usd
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CY2022Q1	colb	Counterparty Default Loss On Forward Contract CounterpartyDefaultLossOnForwardContract	0	usd
CY2023Q1	colb	Counterparty Default Loss On Forward Contract CounterpartyDefaultLossOnForwardContract	0	usd
CY2022Q1	colb	Counterparty Default Loss On Forward Contract CounterpartyDefaultLossOnForwardContract	0	usd
CY2023Q1	us-gaap	Collateralized Financings CollateralizedFinancings	739000	usd
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CY2023Q1	colb	Counterparty Bank Cash As Collateral On Bilateral Positions CounterpartyBankCashAsCollateralOnBilateralPositions	47700000	usd
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CY2023Q1	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-1761000	usd
CY2022Q1	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	27505000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-14038000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	91157000	usd
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156383000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	129159000	shares
CY2023Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2022Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	534000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	156383000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	129693000	shares
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.09
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CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.09
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.70
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	783000	shares
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2023Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	49338000	usd
CY2023Q1	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	294012000	usd
CY2023Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	178800000	usd
CY2023Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	9887728000	usd
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CY2023Q1	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	559566000	usd
CY2022Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	71647000	usd
CY2022Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	285581000	usd
CY2022Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	185017000	usd
CY2022Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	3826814000	usd
CY2022Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	323639000	usd
CY2022Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	594844000	usd
CY2023Q1	colb	Fair Value Portfolio Loans FairValuePortfolioLoans	294000000	usd
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CY2023Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	19100000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-12700000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-9400000	usd
CY2023Q1	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	49338000	usd
CY2023Q1	colb	Fair Value Option Aggregate Unpaid Balance Loans And Long Term Receivables FairValueOptionAggregateUnpaidBalanceLoansAndLongTermReceivables	47829000	usd
CY2023Q1	us-gaap	Fair Value Option Aggregate Differences Loans And Long Term Receivables FairValueOptionAggregateDifferencesLoansAndLongTermReceivables	1509000	usd
CY2022Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	71647000	usd
CY2022Q4	colb	Fair Value Option Aggregate Unpaid Balance Loans And Long Term Receivables FairValueOptionAggregateUnpaidBalanceLoansAndLongTermReceivables	70219000	usd
CY2022Q4	us-gaap	Fair Value Option Aggregate Differences Loans And Long Term Receivables FairValueOptionAggregateDifferencesLoansAndLongTermReceivables	1428000	usd
CY2023Q1	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	294012000	usd
CY2023Q1	colb	Fair Value Loans Held As Assets Aggregate Unpaid Balance Loans And Long Term Receivables FairValueLoansHeldAsAssetsAggregateUnpaidBalanceLoansAndLongTermReceivables	332412000	usd
CY2023Q1	us-gaap	Fair Value Option Loans Held As Assets Aggregate Difference FairValueOptionLoansHeldAsAssetsAggregateDifference	-38400000	usd
CY2022Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	285581000	usd
CY2022Q4	colb	Fair Value Loans Held As Assets Aggregate Unpaid Balance Loans And Long Term Receivables FairValueLoansHeldAsAssetsAggregateUnpaidBalanceLoansAndLongTermReceivables	333469000	usd
CY2022Q4	us-gaap	Fair Value Option Loans Held As Assets Aggregate Difference FairValueOptionLoansHeldAsAssetsAggregateDifference	-47888000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	351200000	usd
CY2023Q1	colb	Effective Tax Rate As A Percentage Of Pre Tax Income Loss EffectiveTaxRateAsAPercentageOfPreTaxIncomeLoss	0.258
	colb	Effective Tax Rate As A Percentage Of Pre Tax Income Loss EffectiveTaxRateAsAPercentageOfPreTaxIncomeLoss	0.250

Files In Submission

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$COLB
COLUMBIA BANKING SYSTEM, INC. Stock $colb

2023 Q2 Form 10-Q Financial Statement

#000088734323000220 Filed on May 09, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COLB COLUMBIA BANKING SYSTEM, INC. Stock $colb

2023 Q2 Form 10-Q Financial Statement

#000088734323000220 Filed on May 09, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COLB
COLUMBIA BANKING SYSTEM, INC. Stock $colb