$STEL
Stellar Bancorp, Inc. Stock $stel

$stel Overview Financials Valuation SEC Filings Company Website

2024 Q2 Form 10-Q Financial Statement

#000147384424000015 Filed on April 26, 2024

Income Statement

Concept	2024 Q2	2024 Q1
Revenue	$1.648M	$1.598M
YoY Change	-98.88%	-98.86%
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	$8.163M	$8.176M
YoY Change	-6.17%	-6.02%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$50.77M	$46.31M
YoY Change	31.26%	88.32%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$37.55M	$32.91M
YoY Change	-11.95%	-30.08%
Income Tax	$7.792M	$6.759M
% Of Pretax Income	20.75%	20.54%
Net Earnings	$29.75M	$26.15M
YoY Change	-15.41%	-29.61%
Net Earnings / Revenue	1805.4%	1636.23%
Basic Earnings Per Share	$0.56	$0.49
Diluted Earnings Per Share	$0.56	$0.49
COMMON SHARES
Basic Shares Outstanding	53.56M shares	53.30M shares
Diluted Shares Outstanding	53.61M shares	53.41M shares

Balance Sheet

Concept	2024 Q2	2024 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$490.3M	$399.7M
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	$114.0M	$115.7M
YoY Change	-4.33%	-7.24%
Goodwill	$497.3M	$497.3M
YoY Change	0.01%	0.01%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$10.72B	$10.73B
YoY Change	-0.51%	1.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.33M	$12.23M
YoY Change	146.54%	205.68%
Accrued Expenses	$18.96M	$19.66M
YoY Change	-9.7%	-10.65%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$12.33M	$12.23M
YoY Change	-52.59%	-52.97%
LONG-TERM LIABILITIES
Long-Term Debt	$350.0M	$324.9M
YoY Change	-27.09%	-6.65%
Other Long-Term Liabilities	$70.27M	$66.72M
YoY Change	46.4%	48.26%
Total Long-Term Liabilities	$420.2M	$391.6M
YoY Change	-20.41%	-0.36%
TOTAL LIABILITIES
Total Short-Term Liabilities	$12.33M	$12.23M
Total Long-Term Liabilities	$420.2M	$391.6M
Total Liabilities	$9.158B	$9.199B
YoY Change	-1.74%	0.44%
SHAREHOLDERS EQUITY
Retained Earnings	$447.9M	$425.1M
YoY Change	23.87%	27.53%
Common Stock	$536.0K	$536.0K
YoY Change	0.56%	0.56%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.566B	$1.531B
YoY Change
Total Liabilities & Shareholders Equity	$10.72B	$10.73B
YoY Change	-0.51%	1.17%

Cashflow Statement

Concept	2024 Q2	2024 Q1
OPERATING ACTIVITIES
Net Income	$29.75M	$26.15M
YoY Change	-15.41%	-29.61%
Depreciation, Depletion And Amortization	$8.163M	$8.176M
YoY Change	-6.17%	-6.02%
Cash From Operating Activities	$38.11M	$31.10M
YoY Change	-22.22%	-36.55%
INVESTING ACTIVITIES
Capital Expenditures	$988.0K	$564.0K
YoY Change	-24.0%	-54.44%
Acquisitions
YoY Change
Other Investing Activities	$104.3M	-$109.1M
YoY Change	-165.7%	-153.39%
Cash From Investing Activities	$103.3M	-$109.6M
YoY Change	-164.58%	-154.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-50.88M	$79.04M
YoY Change	-133.54%	-121.93%
NET CHANGE
Cash From Operating Activities	38.11M	$31.10M
Cash From Investing Activities	103.3M	-$109.6M
Cash From Financing Activities	-50.88M	$79.04M
Net Change In Cash	90.51M	$505.0K
YoY Change	121.83%	-100.47%
FREE CASH FLOW
Cash From Operating Activities	$38.11M	$31.10M
Capital Expenditures	$988.0K	$564.0K
Free Cash Flow	$37.12M	$30.54M
YoY Change	-22.17%	-36.09%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	53291079	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	53291079	shares
CY2024Q1	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2024Q1	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2024Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	9293000	usd
CY2023Q1	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	9653000	usd
CY2024Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	818000	usd
CY2023Q1	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1262000	usd
CY2024Q1	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	3627000	usd
CY2023Q1	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	3771000	usd
CY2024Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	148423000	usd
CY2023Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	140415000	usd
CY2024Q1	us-gaap	Interest Expense Now Accounts Money Market Accounts And Savings Deposits InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits	27530000	usd
CY2023Q1	us-gaap	Interest Expense Now Accounts Money Market Accounts And Savings Deposits InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits	18037000	usd
CY2024Q1	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	15084000	usd
CY2023Q1	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	3307000	usd
CY2024Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	1774000	usd
CY2023Q1	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	1317000	usd
CY2024Q1	stel	Interest Expense Subordinated Debt InterestExpenseSubordinatedDebt	1917000	usd
CY2023Q1	stel	Interest Expense Subordinated Debt InterestExpenseSubordinatedDebt	1927000	usd
CY2024Q1	us-gaap	Interest Expense InterestExpense	46305000	usd
CY2023Q1	us-gaap	Interest Expense InterestExpense	24588000	usd
CY2024Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	102118000	usd
CY2023Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	115827000	usd
CY2024Q1	stel	Financing Receivable Credit Loss Expense Reversal And Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal FinancingReceivableCreditLossExpenseReversalAndOffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	4098000	usd
CY2023Q1	stel	Financing Receivable Credit Loss Expense Reversal And Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal FinancingReceivableCreditLossExpenseReversalAndOffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	3666000	usd
CY2024Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	98020000	usd
CY2023Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	112161000	usd
CY2024Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1598000	usd
CY2023Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1349000	usd
CY2024Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	513000	usd
CY2023Q1	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	198000	usd
CY2024Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	587000	usd
CY2023Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	522000	usd
CY2024Q1	stel	Rebate From Correspondent Bank RebateFromCorrespondentBank	527000	usd
CY2023Q1	stel	Rebate From Correspondent Bank RebateFromCorrespondentBank	1698000	usd
CY2024Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3071000	usd
CY2023Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3731000	usd
CY2024Q1	us-gaap	Noninterest Income NoninterestIncome	6296000	usd
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	7498000	usd
CY2024Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	41376000	usd
CY2023Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	39775000	usd
CY2024Q1	us-gaap	Occupancy Net OccupancyNet	4390000	usd
CY2023Q1	us-gaap	Occupancy Net OccupancyNet	4088000	usd
CY2024Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1964000	usd
CY2023Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	1836000	usd
CY2024Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	4894000	usd
CY2023Q1	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	5054000	usd
CY2024Q1	us-gaap	Professional Fees ProfessionalFees	2662000	usd
CY2023Q1	us-gaap	Professional Fees ProfessionalFees	1527000	usd
CY2024Q1	stel	Regulatory Assessments And Fdic Insurance RegulatoryAssessmentsAndFDICInsurance	1854000	usd
CY2023Q1	stel	Regulatory Assessments And Fdic Insurance RegulatoryAssessmentsAndFDICInsurance	1294000	usd
CY2024Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6212000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6879000	usd
CY2024Q1	us-gaap	Communication Communication	937000	usd
CY2023Q1	us-gaap	Communication Communication	701000	usd
CY2024Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	765000	usd
CY2023Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	839000	usd
CY2024Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	0	usd
CY2023Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	6165000	usd
CY2024Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	6356000	usd
CY2023Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4440000	usd
CY2024Q1	us-gaap	Noninterest Expense NoninterestExpense	71410000	usd
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	72598000	usd
CY2024Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32906000	usd
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	47061000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6759000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9913000	usd
CY2024Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	26147000	usd
CY2023Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37148000	usd
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.70
CY2024Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.13
CY2023Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.13
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	26147000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	37148000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-15330000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	37965000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	234000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-15330000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	37731000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-3228000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	7751000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-12102000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	29980000	usd
CY2024Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	14045000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	67128000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1383176000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	37148000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	29980000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.13
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6926000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	257000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2581000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	1446216000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1521018000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	26147000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12102000	usd
CY2024Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.13
CY2024Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6962000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-250000	usd
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2847000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	1530698000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	26147000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	37148000	usd
CY2024Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	8176000	usd
CY2023Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	8715000	usd
CY2024Q1	stel	Accretion Amortization Of Discounts And Premiums Loans AccretionAmortizationOfDiscountsAndPremiumsLoans	8551000	usd
CY2023Q1	stel	Accretion Amortization Of Discounts And Premiums Loans AccretionAmortizationOfDiscountsAndPremiumsLoans	10093000	usd
CY2024Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2671000	usd
CY2023Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	110000	usd
CY2024Q1	stel	Financing Receivable Credit Loss Expense Reversal And Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal FinancingReceivableCreditLossExpenseReversalAndOffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	4098000	usd
CY2023Q1	stel	Financing Receivable Credit Loss Expense Reversal And Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal FinancingReceivableCreditLossExpenseReversalAndOffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	3666000	usd
CY2024Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2503000	usd
CY2023Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	453000	usd
CY2024Q1	us-gaap	Share Based Compensation ShareBasedCompensation	2847000	usd
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	2581000	usd
CY2024Q1	stel	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	1553000	usd
CY2023Q1	stel	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	981000	usd
CY2024Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	587000	usd
CY2023Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	522000	usd
CY2024Q1	stel	Federal Home Loan Bank Stock Dividends FederalHomeLoanBankStockDividends	493000	usd
CY2023Q1	stel	Federal Home Loan Bank Stock Dividends FederalHomeLoanBankStockDividends	207000	usd
CY2024Q1	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	513000	usd
CY2023Q1	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	198000	usd
CY2024Q1	stel	Excess Tax Benefit From Stock Based Compensation ExcessTaxBenefitFromStockBasedCompensation	35000	usd
CY2023Q1	stel	Excess Tax Benefit From Stock Based Compensation ExcessTaxBenefitFromStockBasedCompensation	47000	usd
CY2024Q1	stel	Increase Decrease In Accrued Interest Receivable And Other Assets IncreaseDecreaseInAccruedInterestReceivableAndOtherAssets	-5913000	usd
CY2023Q1	stel	Increase Decrease In Accrued Interest Receivable And Other Assets IncreaseDecreaseInAccruedInterestReceivableAndOtherAssets	-12129000	usd
CY2024Q1	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-12629000	usd
CY2023Q1	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-5479000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	31100000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	49017000	usd
CY2024Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	185721000	usd
CY2023Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	22218000	usd
CY2024Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	35196000	usd
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	27997000	usd
CY2024Q1	stel	Proceeds From Sales And Calls Of Available For Sale Securities ProceedsFromSalesAndCallsOfAvailableForSaleSecurities	5112000	usd
CY2023Q1	stel	Proceeds From Sales And Calls Of Available For Sale Securities ProceedsFromSalesAndCallsOfAvailableForSaleSecurities	320691000	usd
CY2024Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-24859000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	121392000	usd
CY2024Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	564000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1238000	usd
CY2024Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1992000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3597000	usd
CY2024Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-9494000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	4411000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-109632000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	203026000	usd
CY2024Q1	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	-223666000	usd
CY2023Q1	us-gaap	Net Change Noninterest Bearing Deposits Domestic NetChangeNoninterestBearingDepositsDomestic	-352310000	usd
CY2024Q1	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	144915000	usd
CY2023Q1	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	-176436000	usd
CY2024Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	165000000	usd
CY2023Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	175000000	usd
CY2024Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6962000	usd
CY2023Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6926000	usd
CY2024Q1	stel	Proceeds Payments Issuance Of Shares Share Based Payment Arrangement Including Options Exercised ProceedsPaymentsIssuanceOfSharesShareBasedPaymentArrangementIncludingOptionsExercised	-250000	usd
CY2023Q1	stel	Proceeds Payments Issuance Of Shares Share Based Payment Arrangement Including Options Exercised ProceedsPaymentsIssuanceOfSharesShareBasedPaymentArrangementIncludingOptionsExercised	257000	usd
CY2024Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	79037000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-360415000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	505000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-108372000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	399237000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	371705000	usd
CY2024Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	399742000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	263333000	usd
CY2024Q1	us-gaap	Interest Paid Net InterestPaidNet	45366000	usd
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	22811000	usd
CY2024Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	1204000	usd
CY2023Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	1100000	usd
CY2024Q1	stel	Number Of Offices In Which Entity Operates NumberOfOfficesInWhichEntityOperates	54	office
CY2024Q1	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassification</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">s</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">—Certain items in the prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders’ equity.</span></div>
CY2022Q4	us-gaap	Goodwill Goodwill	497260000	usd
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	usd
CY2024Q1	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	58000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	497318000	usd
CY2024Q1	us-gaap	Goodwill Goodwill	497318000	usd
CY2024Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	17967000	usd
CY2024Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	21528000	usd
CY2024Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	18896000	usd
CY2024Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	16272000	usd
CY2024Q1	stel	Finite Lived Intangible Asset Expected Amortization After Year Three FiniteLivedIntangibleAssetExpectedAmortizationAfterYearThree	35850000	usd
CY2024Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	110513000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1687880000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1493000	usd
CY2024Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	166273000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1523100000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1545130000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2303000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	151753000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1395680000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	76060000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	74067000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	83030000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	78334000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	137346000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	121106000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	343370000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	316719000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	639806000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	590226000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	1048074000	usd
CY2024Q1	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	932874000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1687880000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1523100000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	268809000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	8571000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1110876000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	157702000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1379685000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	166273000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	225879000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5739000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1024020000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	146014000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1249899000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	151753000	usd
CY2024Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	5100000	usd
CY2023Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	320700000	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	234000	usd
CY2024Q1	us-gaap	Security Owned And Pledged As Collateral Associated Liabilities Fair Value SecurityOwnedAndPledgedAsCollateralAssociatedLiabilitiesFairValue	601900000	usd
CY2023Q4	us-gaap	Security Owned And Pledged As Collateral Associated Liabilities Fair Value SecurityOwnedAndPledgedAsCollateralAssociatedLiabilitiesFairValue	607500000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7908111000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7925133000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	96285000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	91684000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	7811826000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	7833449000	usd
CY2024Q1	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	37900000	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	37400000	usd
CY2024Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	57129000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7908111000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	39191000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7925133000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	375892000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	1325876000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	2359850000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	1377455000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	624093000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	925167000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	845230000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	74548000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7908111000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7925133000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	5000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	30000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	612000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	144000	usd
CY2024Q1	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	50000	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	841000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	91684000	usd
CY2024Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5315000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	841000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	127000	usd
CY2024Q1	stel	Financing Receivable Allowance For Credit Loss Net Write Off Recovery FinancingReceivableAllowanceForCreditLossNetWriteOffRecovery	-714000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	96285000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	93180000	usd
CY2023Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3200000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	434000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	242000	usd
CY2023Q1	stel	Financing Receivable Allowance For Credit Loss Net Write Off Recovery FinancingReceivableAllowanceForCreditLossNetWriteOffRecovery	-192000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	96188000	usd
CY2024Q1	stel	Financing Receivable Excluding Accrued Interest Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Collateral Dependent FinancingReceivableExcludingAccruedInterestFinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCollateralDependent	9227000	usd
CY2023Q4	stel	Financing Receivable Excluding Accrued Interest Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss Collateral Dependent FinancingReceivableExcludingAccruedInterestFinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossCollateralDependent	6479000	usd
CY2024Q1	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	usd
CY2024Q1	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	31984000	usd
CY2024Q1	stel	Financing Receivable Nonaccrual With Related Allowance FinancingReceivableNonaccrualWithRelatedAllowance	25145000	usd
CY2024Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	57129000	usd
CY2023Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	29245000	usd
CY2023Q4	stel	Financing Receivable Nonaccrual With Related Allowance FinancingReceivableNonaccrualWithRelatedAllowance	9946000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	39191000	usd
CY2024Q1	stel	Financing Receivable Concessions Granted Percent To Loan Portfolio FinancingReceivableConcessionsGrantedPercentToLoanPortfolio	0.01
CY2024Q1	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	10304000	usd
CY2023Q1	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	3870000	usd
CY2024Q1	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	1400000	usd
CY2024Q1	stel	Number Of Leased Branch Locations And Office Space Along With Equipment NumberOfLeasedBranchLocationsAndOfficeSpaceAlongWithEquipment	31	lease
CY2024Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	19193000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	20746000	usd
CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	19658000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	20659000	usd
CY2024Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y7M17D
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y8M1D
CY2024Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0421
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0417
CY2024Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	1943000	usd
CY2023Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	1809000	usd
CY2024Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	6000	usd
CY2023Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	5000	usd
CY2024Q1	us-gaap	Lease Cost LeaseCost	1949000	usd
CY2023Q1	us-gaap	Lease Cost LeaseCost	1814000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3281000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4428000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4191000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	3978000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3667000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3430000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3469000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3227000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3294000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3047000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	6815000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	6605000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	24717000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	24715000	usd
CY2024Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5059000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4056000	usd
CY2024Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	19658000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	20659000	usd
CY2024Q1	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	542300000	usd
CY2023Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	548400000	usd
CY2024Q1	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	1538006000	usd
CY2024Q1	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	60069000	usd
CY2024Q1	stel	Time Deposits After Two Years TimeDepositsAfterTwoYears	93464000	usd
CY2024Q1	us-gaap	Time Deposits TimeDeposits	1691539000	usd
CY2024Q1	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	786600000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	615900000	usd
CY2024Q1	us-gaap	Excess Capital ExcessCapital	899603000	usd
CY2024Q1	us-gaap	Excess Capital To Risk Weighted Assets ExcessCapitalToRiskWeightedAssets	0.1050
CY2024Q1	stel	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	1053055000	usd
CY2024Q1	stel	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1229
CY2024Q1	stel	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	385544000	usd
CY2024Q1	stel	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeighted	0.0450
CY2024Q1	stel	Excess Common Equity Tier One Risk Based Capital ExcessCommonEquityTierOneRiskBasedCapital	599735000	usd
CY2024Q1	stel	Excess Common Equity Tier One Risk Based Capital To Risk Weighted Assets ExcessCommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.0700
CY2024Q1	stel	Number Of Interest Rate Swap Agreements Outstanding NumberOfInterestRateSwapAgreementsOutstanding	14	interest_rate_swap
CY2023	stel	Number Of Interest Rate Swap Agreements Outstanding NumberOfInterestRateSwapAgreementsOutstanding	15	interest_rate_swap
CY2024Q1	stel	Number Of Credit Risk Participation Agreements NumberOfCreditRiskParticipationAgreements	3	creditagreement
CY2023	stel	Number Of Credit Risk Participation Agreements NumberOfCreditRiskParticipationAgreements	3	creditagreement
CY2024Q1	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	11341000	usd
CY2024Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6759000	usd
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9913000	usd
CY2024Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.205
CY2023Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.211
CY2024Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2000000	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	770505	shares
CY2024Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2800000	usd
CY2023Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2600000	usd
CY2024Q1	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1062953000	usd
CY2024Q1	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1241
CY2024Q1	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	514059000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	258000	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.56
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y1M2D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2398000	usd
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2024Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	22000	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	14.68
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	4000	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	14.11
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	232000	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.01
CY2024Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y7D
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1319000	usd
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	232000	shares
CY2024Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	19.01
CY2024Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y7D
CY2024Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	1319000	usd
CY2024Q1	stel	Offbalance Sheet Financial Instrument Fixed Rate Contractual Amount OffbalanceSheetFinancialInstrumentFixedRateContractualAmount	309465000	usd
CY2024Q1	stel	Off Balance Sheet Financial Instrument Variable Rate Contractual Amount OffBalanceSheetFinancialInstrumentVariableRateContractualAmount	1276153000	usd
CY2023Q4	stel	Offbalance Sheet Financial Instrument Fixed Rate Contractual Amount OffbalanceSheetFinancialInstrumentFixedRateContractualAmount	383215000	usd
CY2023Q4	stel	Off Balance Sheet Financial Instrument Variable Rate Contractual Amount OffBalanceSheetFinancialInstrumentVariableRateContractualAmount	1447460000	usd
CY2024Q1	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1170000000	usd
CY2023Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	1820000000	usd
CY2024Q1	stel	Commitments To Make Loans Period CommitmentsToMakeLoansPeriod	P120D
CY2024Q1	stel	Off Balance Sheet Fixed Rate Loan Commitments Weighted Average Maturity OffBalanceSheetFixedRateLoanCommitmentsWeightedAverageMaturity	P2Y3M10D
CY2024Q1	us-gaap	Capital Capital	1252365000	usd
CY2024Q1	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1462
CY2024Q1	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	685412000	usd
CY2024Q1	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2024Q1	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2024Q1	us-gaap	Excess Tier One Risk Based Capital ExcessTierOneRiskBasedCapital	728250000	usd
CY2024Q1	us-gaap	Excess Tier One Risk Based Capital To Risk Weighted Assets ExcessTierOneRiskBasedCapitalToRiskWeightedAssets	0.0850
CY2024Q1	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1062953000	usd
CY2024Q1	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.1041
CY2024Q1	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	408273000	usd
CY2024Q1	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2024Q1	us-gaap	Excess Tier One Leverage Capital ExcessTierOneLeverageCapital	408273000	usd
CY2024Q1	us-gaap	Excess Tier One Leverage Capital To Average Assets ExcessTierOneLeverageCapitalToAverageAssets	0.0400
CY2023Q4	us-gaap	Capital Capital	1221060000	usd
CY2023Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1402
CY2023Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	696529000	usd
CY2023Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2023Q4	us-gaap	Excess Capital ExcessCapital	914195000	usd
CY2023Q4	us-gaap	Excess Capital To Risk Weighted Assets ExcessCapitalToRiskWeightedAssets	0.1050
CY2023Q4	stel	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	1025076000	usd
CY2023Q4	stel	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1177
CY2023Q4	stel	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	391798000	usd
CY2023Q4	stel	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeighted	0.0450
CY2023Q4	stel	Excess Common Equity Tier One Risk Based Capital ExcessCommonEquityTierOneRiskBasedCapital	604463000	usd
CY2023Q4	stel	Excess Common Equity Tier One Risk Based Capital To Risk Weighted Assets ExcessCommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.0700
CY2023Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1034974000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1189
CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	522397000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2023Q4	us-gaap	Excess Tier One Risk Based Capital ExcessTierOneRiskBasedCapital	740062000	usd
CY2023Q4	us-gaap	Excess Tier One Risk Based Capital To Risk Weighted Assets ExcessTierOneRiskBasedCapitalToRiskWeightedAssets	0.0850
CY2023Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1034974000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.1018
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	406859000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2023Q4	us-gaap	Excess Tier One Leverage Capital ExcessTierOneLeverageCapital	406859000	usd
CY2023Q4	us-gaap	Excess Tier One Leverage Capital To Average Assets ExcessTierOneLeverageCapitalToAverageAssets	0.0400
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	26147000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	37148000	usd
CY2024Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53343000	shares
CY2024Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53021000	shares
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
CY2024Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	63000	shares
CY2023Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	117000	shares
CY2024Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53406000	shares
CY2024Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53138000	shares
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.70
CY2024Q1	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q1	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q1	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
0001473844-24-000015-index-headers.html	Edgar Link	pending
0001473844-24-000015-index.html	Edgar Link	pending
0001473844-24-000015.txt	Edgar Link	pending
0001473844-24-000015-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
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stel-20240331.htm	Edgar Link	pending
stel-20240331.xsd	Edgar Link	pending
stel2024033110qex311.htm	Edgar Link	pending
stel-20240331_def.xml	Edgar Link	unprocessable
stel-20240331_lab.xml	Edgar Link	unprocessable
stel-20240331_pre.xml	Edgar Link	unprocessable
stel-20240331_htm.xml	Edgar Link	completed
stel2024033110qex312.htm	Edgar Link	pending
stel2024033110qex321.htm	Edgar Link	pending
stel2024033110qex322.htm	Edgar Link	pending
stelformofperformanceshare.htm	Edgar Link	pending
steljustinlongemploymentag.htm	Edgar Link	pending
stel-20240331_cal.xml	Edgar Link	unprocessable

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$STEL
Stellar Bancorp, Inc. Stock $stel

2024 Q2 Form 10-Q Financial Statement

#000147384424000015 Filed on April 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STEL Stellar Bancorp, Inc. Stock $stel

2024 Q2 Form 10-Q Financial Statement

#000147384424000015 Filed on April 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STEL
Stellar Bancorp, Inc. Stock $stel