$UBFO
UNITED SECURITY BANCSHARES Stock $ubfo

$ubfo Overview Financials Valuation SEC Filings Company Website

2020 Q2 Form 10-Q Financial Statement

#000113754720000026 Filed on July 31, 2020

Income Statement

Concept	2020 Q2	2019 Q2
Revenue	$8.243M	$10.31M
YoY Change	-20.05%	22.2%
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	$360.0K	$330.0K
YoY Change	9.09%	-2.94%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$530.0K	$1.008M
YoY Change	-47.42%	52.96%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$2.810M	$5.767M
YoY Change	-51.27%	21.0%
Income Tax	$798.0K	$1.670M
% Of Pretax Income	28.4%	28.96%
Net Earnings	$2.012M	$4.097M
YoY Change	-50.89%	20.75%
Net Earnings / Revenue	24.41%	39.74%
Basic Earnings Per Share	$0.12	$0.24
Diluted Earnings Per Share	$0.12	$0.24
COMMON SHARES
Basic Shares Outstanding	16.98M shares	16.95M shares
Diluted Shares Outstanding	16.99M shares	16.98M shares

Balance Sheet

Concept	2020 Q2	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$229.5M	$309.5M
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	$12.50M	$9.529M
YoY Change	31.18%	-5.1%
Goodwill	$4.488M	$4.488M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$2.600M	$3.100M
YoY Change	-16.13%	19.23%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$1.031B	$1.006B
YoY Change	2.47%	14.44%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$0.00	$100.0K
YoY Change	-100.0%	-98.61%
Accrued Expenses	$3.200M	$3.900M
YoY Change	-17.95%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$3.200M	$4.000M
YoY Change	-20.0%	-44.44%
LONG-TERM LIABILITIES
Long-Term Debt	$9.800M	$10.50M
YoY Change	-6.67%	3.96%
Other Long-Term Liabilities	$7.800M	$7.700M
YoY Change	1.3%
Total Long-Term Liabilities	$17.60M	$18.20M
YoY Change	-3.3%	80.2%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.200M	$4.000M
Total Long-Term Liabilities	$17.60M	$18.20M
Total Liabilities	$913.9M	$893.2M
YoY Change	2.32%	15.36%
SHAREHOLDERS EQUITY
Retained Earnings	$58.68M	$54.31M
YoY Change	8.04%	18.01%
Common Stock	$59.18M	$58.82M
YoY Change	0.62%	0.87%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$117.5M	$113.3M
YoY Change
Total Liabilities & Shareholders Equity	$1.031B	$1.006B
YoY Change	2.47%	14.44%

Cashflow Statement

Concept	2020 Q2	2019 Q2
OPERATING ACTIVITIES
Net Income	$2.012M	$4.097M
YoY Change	-50.89%	20.75%
Depreciation, Depletion And Amortization	$360.0K	$330.0K
YoY Change	9.09%	-2.94%
Cash From Operating Activities	$3.310M	$2.260M
YoY Change	46.46%	653.33%
INVESTING ACTIVITIES
Capital Expenditures	-$520.0K	-$280.0K
YoY Change	85.71%	16.67%
Acquisitions
YoY Change
Other Investing Activities	-$23.91M	$9.310M
YoY Change	-356.82%	90.39%
Cash From Investing Activities	-$24.42M	$9.030M
YoY Change	-370.43%	94.19%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	50.80M	37.47M
YoY Change	35.58%	79.88%
NET CHANGE
Cash From Operating Activities	3.310M	2.260M
Cash From Investing Activities	-24.42M	9.030M
Cash From Financing Activities	50.80M	37.47M
Net Change In Cash	29.69M	48.76M
YoY Change	-39.11%	89.14%
FREE CASH FLOW
Cash From Operating Activities	$3.310M	$2.260M
Capital Expenditures	-$520.0K	-$280.0K
Free Cash Flow	$3.830M	$2.540M
YoY Change	50.79%	370.37%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001137547
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Period End Date DocumentPeriodEndDate	2020-06-30
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	CA
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	3191000	USD
CY2019Q1	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201602Member
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-32897
	dei	Entity Registrant Name EntityRegistrantName	UNITED SECURITY BANCSHARES
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	91-2112732
	dei	Entity Address Address Line1 EntityAddressAddressLine1	2126 Inyo Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	Fresno
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	93721
	dei	City Area Code CityAreaCode	559
	dei	Local Phone Number LocalPhoneNumber	248-4943
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2020Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	16977239	shares
CY2020Q2	us-gaap	Cash And Due From Banks CashAndDueFromBanks	34985000	USD
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	27291000	USD
CY2020Q2	ubfo	Due From Frb Interest Bearing Cash DueFromFrbInterestBearingCash	194556000	USD
CY2019Q4	ubfo	Due From Frb Interest Bearing Cash DueFromFrbInterestBearingCash	191704000	USD
CY2020Q2	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	229541000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Federal Funds Sold CashCashEquivalentsAndFederalFundsSold	218995000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92877000	USD
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CY2020Q2	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3862000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3776000	USD
CY2020Q2	us-gaap	Short Term Investments ShortTermInvestments	96739000	USD
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	80088000	USD
CY2020Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	649654000	USD
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CY2020Q2	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	-1004000	USD
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CY2020Q2	us-gaap	Goodwill Goodwill	4488000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4488000	USD
CY2020Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2574000	USD
CY2020Q2	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	20279000	USD
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CY2019Q4	us-gaap	Other Assets OtherAssets	12855000	USD
CY2020Q2	us-gaap	Assets Assets	1031373000	USD
CY2019Q4	us-gaap	Assets Assets	956919000	USD
CY2020Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	362010000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	311950000	USD
CY2020Q2	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	531102000	USD
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CY2020Q2	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	36000	USD
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CY2020Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	3168000	USD
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CY2020Q2	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	7826000	USD
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CY2020Q2	us-gaap	Subordinated Debt SubordinatedDebt	9771000	USD
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CY2020Q2	us-gaap	Liabilities Liabilities	913913000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	840931000	USD
CY2020Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0
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CY2020Q2	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	38000	USD
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	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	605000	USD
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	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1724000	USD
CY2020Q2	us-gaap	Interest Expense Loans From Other Federal Home Loan Banks InterestExpenseLoansFromOtherFederalHomeLoanBanks	83000	USD
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	us-gaap	Interest Expense InterestExpense	1291000	USD
	us-gaap	Interest Expense InterestExpense	1965000	USD
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	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	16157000	USD
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	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	18753000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	618000	USD
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	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	258000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	292000	USD
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CY2020Q2	ubfo	Gain Losson Fair Value Optionof Financial Liability GainLossonFairValueOptionofFinancialLiability	-30000	USD
CY2019Q2	ubfo	Gain Losson Fair Value Optionof Financial Liability GainLossonFairValueOptionofFinancialLiability	497000	USD
	ubfo	Gain Losson Fair Value Optionof Financial Liability GainLossonFairValueOptionofFinancialLiability	1469000	USD
	ubfo	Gain Losson Fair Value Optionof Financial Liability GainLossonFairValueOptionofFinancialLiability	911000	USD
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CY2020Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	118000	USD
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	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	328000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	408000	USD
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	us-gaap	Noninterest Income NoninterestIncome	3796000	USD
	us-gaap	Noninterest Income NoninterestIncome	3252000	USD
CY2020Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2414000	USD
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	us-gaap	Labor And Related Expense LaborAndRelatedExpense	5409000	USD
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CY2020Q2	us-gaap	Occupancy Net OccupancyNet	869000	USD
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	us-gaap	Occupancy Net OccupancyNet	1723000	USD
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CY2020Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	135000	USD
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	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	247000	USD
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CY2020Q2	us-gaap	Professional Fees ProfessionalFees	555000	USD
CY2019Q2	us-gaap	Professional Fees ProfessionalFees	746000	USD
	us-gaap	Professional Fees ProfessionalFees	1257000	USD
	us-gaap	Professional Fees ProfessionalFees	1559000	USD
CY2020Q2	ubfo	Regulatory Assessments Expense Benefit RegulatoryAssessmentsExpenseBenefit	77000	USD
CY2019Q2	ubfo	Regulatory Assessments Expense Benefit RegulatoryAssessmentsExpenseBenefit	83000	USD
	ubfo	Regulatory Assessments Expense Benefit RegulatoryAssessmentsExpenseBenefit	162000	USD
	ubfo	Regulatory Assessments Expense Benefit RegulatoryAssessmentsExpenseBenefit	176000	USD
CY2020Q2	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	94000	USD
CY2019Q2	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	95000	USD
	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	188000	USD
	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	186000	USD
CY2020Q2	ubfo	Correspondent Bank Service Charges CorrespondentBankServiceCharges	17000	USD
CY2019Q2	ubfo	Correspondent Bank Service Charges CorrespondentBankServiceCharges	14000	USD
	ubfo	Correspondent Bank Service Charges CorrespondentBankServiceCharges	33000	USD
	ubfo	Correspondent Bank Service Charges CorrespondentBankServiceCharges	28000	USD
CY2020Q2	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-780000	USD
CY2019Q2	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-87000	USD
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-933000	USD
	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-152000	USD
CY2020Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	612000	USD
CY2019Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	525000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1193000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1104000	USD
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	5553000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	5262000	USD
	us-gaap	Noninterest Expense NoninterestExpense	11145000	USD
	us-gaap	Noninterest Expense NoninterestExpense	10609000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2810000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	5766000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	6674000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	11396000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	798000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1669000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1906000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3292000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	2012000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	4097000	USD
	us-gaap	Net Income Loss NetIncomeLoss	4768000	USD
	us-gaap	Net Income Loss NetIncomeLoss	8104000	USD
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.24
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.24
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16975588	shares
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16950564	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16974845	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16948810	shares
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16988778	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16981705	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16992223	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16977224	shares
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	2012000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	4097000	USD
	us-gaap	Net Income Loss NetIncomeLoss	4768000	USD
	us-gaap	Net Income Loss NetIncomeLoss	8104000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	952000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	275000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	827000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	563000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	20000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	14000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	40000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	28000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-1208000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-542000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-453000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-1247000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-236000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-253000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	414000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-656000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	342000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	85000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	305000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	170000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	5000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	4000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	11000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	8000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	-356000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	-160000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	-133000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	111193000	USD
CY2019Q1	us-gaap	Dividends Common Stock DividendsCommonStock	1869000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	99000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	4007000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	-368000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-227000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-182000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	231000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-466000	USD
CY2020Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1785000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3915000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4999000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	7638000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	109240000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-284000	USD
CY2019Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.11
CY2019Q2	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.11
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-182000	USD
CY2019Q2	us-gaap	Dividends Common Stock DividendsCommonStock	1865000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	95000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	4097000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	113338000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-513000	USD
CY2019Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.11
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1865000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	78000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	4173000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	115211000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-327000	USD
CY2019Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.11
CY2019Q4	us-gaap	Dividends Common Stock DividendsCommonStock	1868000	USD
CY2019Q4	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2019Q4	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	77000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	2895000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	115988000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	458000	USD
CY2020Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.11
CY2020Q1	us-gaap	Dividends Common Stock DividendsCommonStock	1867000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2020Q1	ubfo	Stockholders Equity Tax Benefit From Restricted Stock Units Released StockholdersEquityTaxBenefitFromRestrictedStockUnitsReleased	1000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	78000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	2754000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	117410000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-227000	USD
CY2020Q2	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.11
CY2020Q2	us-gaap	Dividends Common Stock DividendsCommonStock	1866000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	0	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	131000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	2012000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	117460000	USD
	us-gaap	Net Income Loss NetIncomeLoss	4768000	USD
	us-gaap	Net Income Loss NetIncomeLoss	8104000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2134000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	10000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	698000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	694000	USD
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	-295000	USD
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	-354000	USD
	ubfo	Amortizationof Investment Securities AmortizationofInvestmentSecurities	523000	USD
	ubfo	Amortizationof Investment Securities AmortizationofInvestmentSecurities	298000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	937000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	1972000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-23000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	20000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-397000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-2104000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	184000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	492000	USD
	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1472000	USD
	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	760000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	85000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	110000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	209000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	194000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	300000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-99000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-113000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0	USD
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	727000	USD
	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
	us-gaap	Gain Loss On Sale Of Insurance Block GainLossOnSaleOfInsuranceBlock	310000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	18348000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	26876000	USD
	us-gaap	Gain Loss On Sale Of Insurance Block GainLossOnSaleOfInsuranceBlock	0	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	258000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	292000	USD
	ubfo	Gain Loss On Fair Value Of Financial Instruments Net Pretax GainLossOnFairValueOfFinancialInstrumentsNetPretax	1469000	USD
	ubfo	Gain Loss On Fair Value Of Financial Instruments Net Pretax GainLossOnFairValueOfFinancialInstrumentsNetPretax	911000	USD
	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	0	USD
	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-114000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	6000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-762000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1758000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8116000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5076000	USD
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	39000	USD
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	47000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	27971000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	0	USD
	ubfo	Principal Paymentsof Availablefor Sale Securities PrincipalPaymentsofAvailableforSaleSecurities	11709000	USD
	ubfo	Principal Paymentsof Availablefor Sale Securities PrincipalPaymentsofAvailableforSaleSecurities	6828000	USD
	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	53461000	USD
	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	14559000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	895000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	USD
	us-gaap	Payments To Acquire Limited Partnership Interests PaymentsToAcquireLimitedPartnershipInterests	201000	USD
	us-gaap	Payments To Acquire Limited Partnership Interests PaymentsToAcquireLimitedPartnershipInterests	320000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	12000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1243000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	759000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	392000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68584000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	20640000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	76476000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	77652000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-1727000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-12380000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3735000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1869000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	71014000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	63403000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	10546000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	89123000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	218995000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	220337000	USD
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	229541000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	309460000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92877000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	76561000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	92299000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1015000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	437000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	272000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	521000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	76312000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	0	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	0	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	18435000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	26727000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	46988000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	47802000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	92299000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92877000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2020Q2	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2019Q2	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	21463000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	232000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	17340000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	205000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	38803000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	437000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	29361000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	199000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	27233000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	322000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	56594000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	521000	USD
	ubfo	Number Of General Segments For The Segregation Of Portfolio NumberOfGeneralSegmentsForTheSegregationOfPortfolio	2	segment
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	85000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	110000	USD
CY2020Q2	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	71000	USD
CY2019Q2	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	53000	USD
CY2020Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2019Q4	us-gaap	Trading Securities TradingSecurities	0	USD
CY2020Q2	us-gaap	Trading Securities TradingSecurities	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2020Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	649654000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	597374000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	10866000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	638788000	USD
CY2020Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	649654000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	269000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	12355000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	585019000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	597374000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	386000	USD
	ubfo	Period Of Default Minimum PeriodOfDefaultMinimum	P90D
	ubfo	Period Of Default Minimum PeriodOfDefaultMinimum	P90D
	ubfo	Number Of Monthly Payments To Demonstrate Repayment Ability NumberOfMonthlyPaymentsToDemonstrateRepaymentAbility	6	payment
CY2020Q2	us-gaap	Financing Receivable Loan In Process FinancingReceivableLoanInProcess	0	USD
CY2019Q4	us-gaap	Financing Receivable Loan In Process FinancingReceivableLoanInProcess	0	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	11623000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	11697000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	15436000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	13651000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1802000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	15453000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	449000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	16148000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	263000	USD
	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	17000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	17036000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	14064000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	3008000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	17072000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1145000	USD
CY2020Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	18125000	USD
CY2020Q1	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	601000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	36000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	15685000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	18225000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	124000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	197000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	67000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	87000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	16148000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	18396000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	263000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	334000	USD
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	148000	USD
	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	129000	USD
	ubfo	Financing Receivable Periodof Successful Payment History Usedfor Restructured Loan Accrual Status FinancingReceivablePeriodofSuccessfulPaymentHistoryUsedforRestructuredLoanAccrualStatus	P6M
	ubfo	Financing Receivable Modifications Numberof Contracts During Period2 FinancingReceivableModificationsNumberofContractsDuringPeriod2	1	contract
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	179000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	179000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	contract
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2020Q2	ubfo	Number Of Restructured Loans NumberOfRestructuredLoans	13	loan
CY2020Q2	ubfo	Total Restructured Loans TotalRestructuredLoans	5155000	USD
CY2019Q4	ubfo	Number Of Restructured Loans NumberOfRestructuredLoans	13	loan
CY2019Q4	ubfo	Total Restructured Loans TotalRestructuredLoans	5187000	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	5253000	USD
CY2020Q2	ubfo	Financing Receivable Modifications Additions FinancingReceivableModificationsAdditions	0	USD
CY2020Q2	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Principal Additions Reductions FinancingReceivablesImpairedTroubledDebtRestructuringPrincipalAdditionsReductions	98000	USD
CY2020Q2	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Credit Losses Write Offs FinancingReceivablesImpairedTroubledDebtRestructuringCreditLossesWriteOffs	0	USD
CY2020Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	5155000	USD
CY2020Q2	ubfo	Financing Receivable Modification Allowance For Loan Losses FinancingReceivableModificationAllowanceForLoanLosses	449000	USD
CY2020Q2	ubfo	Financing Receivable Modifications Defaults FinancingReceivableModificationsDefaults	0	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	6340000	USD
CY2019Q2	ubfo	Financing Receivable Modifications Additions FinancingReceivableModificationsAdditions	0	USD
CY2019Q2	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Principal Additions Reductions FinancingReceivablesImpairedTroubledDebtRestructuringPrincipalAdditionsReductions	157000	USD
CY2019Q2	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Credit Losses Write Offs FinancingReceivablesImpairedTroubledDebtRestructuringCreditLossesWriteOffs	0	USD
CY2019Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	6183000	USD
CY2019Q2	ubfo	Financing Receivable Modification Allowance For Loan Losses FinancingReceivableModificationAllowanceForLoanLosses	830000	USD
CY2019Q2	ubfo	Financing Receivable Modifications Defaults FinancingReceivableModificationsDefaults	0	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	5187000	USD
	ubfo	Financing Receivable Modifications Additions FinancingReceivableModificationsAdditions	179000	USD
	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Principal Additions Reductions FinancingReceivablesImpairedTroubledDebtRestructuringPrincipalAdditionsReductions	211000	USD
	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Credit Losses Write Offs FinancingReceivablesImpairedTroubledDebtRestructuringCreditLossesWriteOffs	0	USD
CY2020Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	5155000	USD
CY2020Q2	ubfo	Financing Receivable Modification Allowance For Loan Losses FinancingReceivableModificationAllowanceForLoanLosses	449000	USD
	ubfo	Financing Receivable Modifications Defaults FinancingReceivableModificationsDefaults	0	USD
CY2018Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	7059000	USD
	ubfo	Financing Receivable Modifications Additions FinancingReceivableModificationsAdditions	0	USD
	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Principal Additions Reductions FinancingReceivablesImpairedTroubledDebtRestructuringPrincipalAdditionsReductions	871000	USD
	ubfo	Financing Receivables Impaired Troubled Debt Restructuring Credit Losses Write Offs FinancingReceivablesImpairedTroubledDebtRestructuringCreditLossesWriteOffs	5000	USD
CY2019Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	6183000	USD
CY2019Q2	ubfo	Financing Receivable Modification Allowance For Loan Losses FinancingReceivableModificationAllowanceForLoanLosses	830000	USD
	ubfo	Financing Receivable Modifications Defaults FinancingReceivableModificationsDefaults	0	USD
	ubfo	Number Of Payment Deferrals NumberOfPaymentDeferrals	28	payment_deferral
CY2020Q2	ubfo	Financing Receivable After Allowance For Credit Loss Modified Due To Covid19 FinancingReceivableAfterAllowanceForCreditLossModifiedDueToCOVID19	69997000	USD
	ubfo	Number Of Risk Rating Approaches NumberOfRiskRatingApproaches	2	rating
	ubfo	Numberof Loan Portfolio Segment NumberofLoanPortfolioSegment	10	segment
	ubfo	Numberof Loans Entity Experienced Losses NumberofLoansEntityExperiencedLosses	3	loan
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9120000	USD
CY2020Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	428000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	700000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	14000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	686000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8862000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	449000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8413000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8862000	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8417000	USD
CY2019Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	36000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-31000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8452000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1439000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	7013000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8452000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	7908000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2134000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1208000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	28000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	1180000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8862000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	449000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8413000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8862000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8395000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	10000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	119000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	166000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-47000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8452000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1439000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	7013000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	8452000	USD
CY2020Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	15453000	USD
CY2020Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	634201000	USD
CY2020Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	649654000	USD
CY2019Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	18054000	USD
CY2019Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	555367000	USD
CY2019Q2	us-gaap	Notes Receivable Gross NotesReceivableGross	573421000	USD
CY2019Q4	us-gaap	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNOW	360934000	USD
CY2020Q2	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	89153000	USD
CY2019Q4	us-gaap	Deposits Deposits	818362000	USD
CY2020Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	362010000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	311950000	USD
CY2020Q2	us-gaap	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNOW	378274000	USD
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	80078000	USD
CY2020Q2	ubfo	Time Deposits Less Than250000 TimeDepositsLessThan250000	41274000	USD
CY2019Q4	ubfo	Time Deposits Less Than250000 TimeDepositsLessThan250000	44926000	USD
CY2020Q2	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	22401000	USD
CY2019Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	20474000	USD
CY2020Q2	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	531102000	USD
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	506412000	USD
CY2020Q2	us-gaap	Deposits Deposits	893112000	USD
CY2020Q2	us-gaap	Federal Home Loan Bank Advances Current FederalHomeLoanBankAdvancesCurrent	0	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Current FederalHomeLoanBankAdvancesCurrent	0	USD
	ubfo	Lessee Operating Lease Number Of Contracts LesseeOperatingLeaseNumberOfContracts	12	contract
	ubfo	Lessee Financing Lease Number Of Contracts LesseeFinancingLeaseNumberOfContracts	0	contract
	us-gaap	Operating Lease Cost OperatingLeaseCost	380000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	378000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	117000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	108000	USD
	us-gaap	Sublease Income SubleaseIncome	0	USD
	us-gaap	Sublease Income SubleaseIncome	0	USD
	us-gaap	Lease Cost LeaseCost	497000	USD
	us-gaap	Lease Cost LeaseCost	486000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	380000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y7D
CY2020Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0515
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	708000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	658000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	667000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	625000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	406000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	624000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	3688000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	520000	USD
CY2020Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	3168000	USD
	us-gaap	Interest Paid Net InterestPaidNet	1314000	USD
	us-gaap	Interest Paid Net InterestPaidNet	1946000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	3790000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	40000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	28000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	827000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	563000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-453000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-1247000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1866000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1865000	USD
CY2019Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3395000	USD
CY2019Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	3486000	USD
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.11
CY2020Q2	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1866000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.11
CY2020Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1867000	USD
CY2017Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	3000000	USD
CY2020Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2012000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4097000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4768000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	8104000	USD
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16975588	shares
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16950564	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16974845	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16948810	shares
CY2020Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	13190	shares
CY2019Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	31141	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	17378	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	28414	shares
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16988778	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16981705	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16992223	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16977224	shares
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.24
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.24
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2020Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	101000	shares
CY2019Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	60000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	101000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	60000	shares
CY2020Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1906000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3292000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2856
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2889
	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	1015000	USD
	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	716000	USD
	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-336000	USD
	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	-237000	USD
	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	1015000	USD
	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	716000	USD
	ubfo	Fair Value Option Credit Risk Gain On Assets Net Before Tax FairValueOptionCreditRiskGainOnAssetsNetBeforeTax	1469000	USD
	ubfo	Fair Value Option Credit Risk Gain On Assets Net After Tax FairValueOptionCreditRiskGainOnAssetsNetAfterTax	1035000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-453000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-319000	USD
	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-336000	USD
	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	-237000	USD
	ubfo	Fair Value Option Credit Risk Gain On Assets Net Before Tax FairValueOptionCreditRiskGainOnAssetsNetBeforeTax	911000	USD
	ubfo	Fair Value Option Credit Risk Gain On Assets Net After Tax FairValueOptionCreditRiskGainOnAssetsNetAfterTax	642000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-1247000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-878000	USD
CY2020Q2	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-1238000	USD
CY2020Q2	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	-871000	USD
CY2019Q2	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-45000	USD
CY2019Q2	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	-32000	USD
CY2020Q2	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-1238000	USD
CY2020Q2	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	-871000	USD
CY2020Q2	ubfo	Fair Value Option Credit Risk Gross Losses On Assets FairValueOptionCreditRiskGrossLossesOnAssets	30000	USD
CY2020Q2	ubfo	Fair Value Option Credit Risk Losses On Assets Net FairValueOptionCreditRiskLossesOnAssetsNet	21000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-1208000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-851000	USD
CY2019Q2	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-45000	USD
CY2019Q2	ubfo	Fair Value Option Credit Risk Gains Losseson Assets Netof Tax FairValueOptionCreditRiskGainsLossesonAssetsNetofTax	-32000	USD
CY2019Q2	ubfo	Fair Value Option Credit Risk Gain On Assets Net Before Tax FairValueOptionCreditRiskGainOnAssetsNetBeforeTax	497000	USD
CY2019Q2	ubfo	Fair Value Option Credit Risk Gain On Assets Net After Tax FairValueOptionCreditRiskGainOnAssetsNetAfterTax	350000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodBeforeTax	-542000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-382000	USD
CY2020Q2	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	100071000	USD
CY2020Q2	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	9771000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	80232000	USD
CY2019Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	10808000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	4488000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4488000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	4488000	USD
CY2020Q2	ubfo	Financing Receivable After Allowance For Credit Loss Modified Due To Covid19 FinancingReceivableAfterAllowanceForCreditLossModifiedDueToCOVID19	69997000	USD
	ubfo	Number Of Payment Deferrals NumberOfPaymentDeferrals	28	payment_deferral

Files In Submission

Name	View Source	Status
0001137547-20-000026-index-headers.html	Edgar Link	pending
0001137547-20-000026-index.html	Edgar Link	pending
0001137547-20-000026.txt	Edgar Link	pending
0001137547-20-000026-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
ubfo-20200630.htm	Edgar Link	pending
ubfo-20200630.xsd	Edgar Link	pending
ubfo-20200630exhibit311.htm	Edgar Link	pending
ubfo-20200630exhibit312.htm	Edgar Link	pending
ubfo-20200630exhibit321.htm	Edgar Link	pending
ubfo-20200630exhibit322.htm	Edgar Link	pending
ubfo-20200630_cal.xml	Edgar Link	unprocessable
ubfo-20200630_def.xml	Edgar Link	unprocessable
ubfo-20200630_htm.xml	Edgar Link	completed
ubfo-20200630_lab.xml	Edgar Link	unprocessable
ubfo-20200630_pre.xml	Edgar Link	unprocessable

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$UBFO
UNITED SECURITY BANCSHARES Stock $ubfo

2020 Q2 Form 10-Q Financial Statement

#000113754720000026 Filed on July 31, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UBFO UNITED SECURITY BANCSHARES Stock $ubfo

2020 Q2 Form 10-Q Financial Statement

#000113754720000026 Filed on July 31, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UBFO
UNITED SECURITY BANCSHARES Stock $ubfo