$CBFV
CB Financial Services, Inc. Stock $cbfv

$cbfv Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000160530120000027 Filed on November 09, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q3
Revenue	$11.76M	$11.66M	$13.10M
YoY Change	-9.35%	-11.01%	11.34%
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	$760.0K	$420.0K	$900.0K
YoY Change	-24.0%	-53.33%	-1.1%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$1.121M	$1.240M	$2.002M
YoY Change	-44.75%	-38.06%	25.6%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$3.687M	-$17.58M	$4.630M
YoY Change	-9.19%	-479.68%	61.44%
Income Tax	$608.0K	-$184.0K	$884.0K
% Of Pretax Income	16.49%		19.09%
Net Earnings	$3.079M	-$17.40M	$3.746M
YoY Change	-34.17%	-564.36%	63.44%
Net Earnings / Revenue	26.19%	-149.24%	28.6%
Basic Earnings Per Share	$0.57	-$3.22	$0.69
Diluted Earnings Per Share	$0.57	-$3.22	$0.69
COMMON SHARES
Basic Shares Outstanding	5.398M shares	5.395M shares	5.433M shares
Diluted Shares Outstanding		5.395M shares	5.459M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$160.9M	$112.2M	$88.41M
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	$20.30M	$20.44M	$22.57M
YoY Change	-8.89%	-9.43%	-5.71%
Goodwill	$9.732M	$9.732M	$28.43M
YoY Change	-65.76%	-65.76%	5.0%
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	$1.417B	$1.393B	$1.328B
YoY Change	7.2%	4.9%	5.93%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$7.400M	$6.300M	$6.300M
YoY Change	19.35%	0.0%	200.0%
Accrued Expenses	$1.200M	$1.200M	$1.400M
YoY Change	-7.69%	-14.29%
Deferred Revenue
YoY Change
Short-Term Debt	$41.06M	$42.06M	$29.12M
YoY Change	34.29%	44.45%	-7.8%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$8.600M	$7.500M	$7.700M
YoY Change	14.67%	-2.6%	266.67%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$0.00	$0.00	$0.00
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.600M	$7.500M	$7.700M
Total Long-Term Liabilities	$0.00	$0.00	$0.00
Total Liabilities	$1.282B	$1.260B	$1.180B
YoY Change	9.55%	6.77%	5.35%
SHAREHOLDERS EQUITY
Retained Earnings	$51.13M	$49.35M	$63.58M
YoY Change	-23.63%	-22.39%	12.22%
Common Stock	$2.367M	$2.367M	$2.367M
YoY Change	0.0%	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$5.094M	$5.825M	$4.350M
YoY Change	32.59%	33.91%	-7.05%
Treasury Stock Shares	246.6K shares	282.3K shares	$247.5K
Shareholders Equity	$134.5M	$133.3M	$148.1M
YoY Change
Total Liabilities & Shareholders Equity	$1.417B	$1.393B	$1.328B
YoY Change	7.2%	4.9%	5.93%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q3
OPERATING ACTIVITIES
Net Income	$3.079M	-$17.40M	$3.746M
YoY Change	-34.17%	-564.36%	63.44%
Depreciation, Depletion And Amortization	$760.0K	$420.0K	$900.0K
YoY Change	-24.0%	-53.33%	-1.1%
Cash From Operating Activities	$4.880M	$2.520M	$4.910M
YoY Change	-5.43%	-48.68%	52.48%
INVESTING ACTIVITIES
Capital Expenditures	-$140.0K	-$80.00K	-$20.00K
YoY Change	-800.0%	300.0%	-97.47%
Acquisitions
YoY Change
Other Investing Activities	$23.79M	-$25.18M	$20.26M
YoY Change	-917.53%	-224.28%	-1042.33%
Cash From Investing Activities	$23.64M	-$25.26M	$20.24M
YoY Change	-917.99%	-224.8%	-788.44%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	20.22M	3.510M	18.89M
YoY Change	-293.12%	-81.42%	-12.14%
NET CHANGE
Cash From Operating Activities	4.880M	2.520M	4.910M
Cash From Investing Activities	23.64M	-25.26M	20.24M
Cash From Financing Activities	20.22M	3.510M	18.89M
Net Change In Cash	48.74M	-19.23M	44.04M
YoY Change	-694.39%	-143.66%	102.2%
FREE CASH FLOW
Cash From Operating Activities	$4.880M	$2.520M	$4.910M
Capital Expenditures	-$140.0K	-$80.00K	-$20.00K
Free Cash Flow	$5.020M	$2.600M	$4.930M
YoY Change	-2.33%	-47.26%	22.94%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001605301
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Entity File Number EntityFileNumber	001-36706
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Registrant Name EntityRegistrantName	CB FINANCIAL SERVICES, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	51-0534721
	dei	Entity Address Address Line1 EntityAddressAddressLine1	100 N. Market Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	Carmichaels
	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	15320
	dei	City Area Code CityAreaCode	724
	dei	Local Phone Number LocalPhoneNumber	966-5041
	dei	Security12b Title Security12bTitle	Common stock, par value $0.4167 per share
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
	dei	Trading Symbol TradingSymbol	CBFV
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
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CY2019Q3	us-gaap	Taxes Other TaxesOther	226000	USD
	us-gaap	Taxes Other TaxesOther	963000	USD
	us-gaap	Taxes Other TaxesOther	743000	USD
CY2020Q3	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	531000	USD
CY2019Q3	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	312000	USD
	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	1471000	USD
	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	945000	USD
CY2020Q3	us-gaap	Professional Fees ProfessionalFees	161000	USD
CY2019Q3	us-gaap	Professional Fees ProfessionalFees	117000	USD
	us-gaap	Professional Fees ProfessionalFees	567000	USD
	us-gaap	Professional Fees ProfessionalFees	458000	USD
CY2020Q3	us-gaap	Advertising Expense AdvertisingExpense	148000	USD
CY2019Q3	us-gaap	Advertising Expense AdvertisingExpense	208000	USD
	us-gaap	Advertising Expense AdvertisingExpense	486000	USD
	us-gaap	Advertising Expense AdvertisingExpense	545000	USD
CY2020Q3	cbfv	Other Real Estate Owned Income Expense OtherRealEstateOwnedIncomeExpense	12000	USD
CY2019Q3	cbfv	Other Real Estate Owned Income Expense OtherRealEstateOwnedIncomeExpense	-13000	USD
	cbfv	Other Real Estate Owned Income Expense OtherRealEstateOwnedIncomeExpense	30000	USD
	cbfv	Other Real Estate Owned Income Expense OtherRealEstateOwnedIncomeExpense	81000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	532000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	531000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1596000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1595000	USD
CY2020Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	18693000	USD
CY2019Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	18693000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q3	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	884000	USD
CY2019Q3	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0	USD
	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	884000	USD
	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5406710	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5451705	shares
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	919000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	984000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2977000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	3064000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	28968000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	8257000	USD
	us-gaap	Noninterest Expense NoninterestExpense	47042000	USD
	us-gaap	Noninterest Expense NoninterestExpense	25934000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-17579000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4630000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-13079000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	11996000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-184000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	884000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	640000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2346000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-17395000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	3746000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-13719000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9650000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.22
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.54
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.78
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.22
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.54
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.77
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5395342	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5433289	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5406710	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5433296	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5395342	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5458723	shares
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-17395000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	3746000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-13719000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9650000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	-653000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	121000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	2292000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	5652000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax	-137000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax	47000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax	481000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax	1209000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	3000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	489000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-50000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	103000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-11000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-516000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	72000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1425000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4482000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-17911000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3818000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-12294000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	14132000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	152392000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-17395000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-516000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	114000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.24
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1296000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	133299000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	145507000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	3746000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	72000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	77000	USD
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.24
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1304000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	148098000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	151097000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-13719000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1425000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	370000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-78000	USD
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	67816	shares
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1908000	USD
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.72
	us-gaap	Dividends Common Stock DividendsCommonStock	3888000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	133299000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	137625000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9650000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4482000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	230000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	22000	USD
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.72
	us-gaap	Dividends Common Stock DividendsCommonStock	3911000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	148098000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-13719000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9650000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	9000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	145000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2578000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2730000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4000000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	550000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	18693000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	884000	USD
	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-469000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	104000	USD
	cbfv	Gain Loss On Purchased Tax Credits GainLossOnPurchasedTaxCredits	46000	USD
	cbfv	Gain Loss On Purchased Tax Credits GainLossOnPurchasedTaxCredits	27000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	417000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	7188000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	408000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	24317000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	7378000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	23314000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1003000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	190000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	489000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-50000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-26000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-6000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	370000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	230000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	944000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-33000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-48000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	2000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-253000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	259000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	412000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	312000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-252000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	331000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1329000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	136000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9198000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	12705000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	91219000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	34490000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	68851000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	50185000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	17893000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	29460000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	100436000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	88413000	USD
	cbfv	Interest Expense And Accrued Interest On Deposit Accounts InterestExpenseAndAccruedInterestOnDepositAccounts	4382000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	21531000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	184000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	66000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	26000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	900000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	99000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1123000	USD
	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	305000	USD
	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	-214000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	750000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-60539000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-8145000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	80677000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	39250000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	11490000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-1861000	USD
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-3000000	USD
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-3000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3888000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3911000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1908000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	cbfv	Proceeds From Payments For Stock Options Exercised ProceedsFromPaymentsForStockOptionsExercised	-78000	USD
	cbfv	Proceeds From Payments For Stock Options Exercised ProceedsFromPaymentsForStockOptionsExercised	22000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	83293000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	30500000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	31952000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	35060000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80217000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	53353000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	112169000	USD
	cbfv	Interest Expense And Accrued Interest On Deposit Accounts InterestExpenseAndAccruedInterestOnDepositAccounts	5070000	USD
	us-gaap	Interest Paid Net InterestPaidNet	4694000	USD
	us-gaap	Interest Paid Net InterestPaidNet	5497000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	1785000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	2260000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	115000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	427000	USD
	cbfv	Income Tax Refund Receivable IncomeTaxRefundReceivable	1002000	USD
	cbfv	Income Tax Refund Receivable IncomeTaxRefundReceivable	0	USD
	cbfv	Loan Payoff Receivable LoanPayoffReceivable	5628000	USD
	cbfv	Loan Payoff Receivable LoanPayoffReceivable	1644000	USD
	cbfv	Right Of Use Asset Recognized RightOfUseAssetRecognized	329000	USD
	cbfv	Right Of Use Asset Recognized RightOfUseAssetRecognized	1706000	USD
	cbfv	Lease Liability Recognized LeaseLiabilityRecognized	329000	USD
	cbfv	Lease Liability Recognized LeaseLiabilityRecognized	1712000	USD
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-bottom:4pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassifications</span></div><div style="margin-bottom:4pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain comparative amounts for the prior year have been reclassified to conform to the current year presentation. Such reclassifications did not affect net (loss) income or stockholders’ equity.</span></div>
	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-17395000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	3746000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-13719000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9650000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5395342	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5433289	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5406710	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5433296	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	25434	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	18409	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5395342	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5458723	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5406710	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5451705	shares
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.22
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.54
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.78
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.22
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.54
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.77
CY2020Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	151490000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	5355000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	178000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	156667000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2289000	USD
CY2020Q3	us-gaap	Trading Securities TradingSecurities	158956000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	191301000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3647000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	273000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	194675000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2710000	USD
CY2019Q4	us-gaap	Trading Securities TradingSecurities	197385000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	8	security
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	33815000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	178000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	0	security
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	8	security
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	33815000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	178000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	13	security
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	36119000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	187000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	8	security
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	16158000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	86000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	21	security
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	52277000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	273000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	0	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	4303000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	4380000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	55267000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	56462000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	91920000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	95825000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	151490000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	156667000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	50000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	489000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	62000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	47000	USD
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	USD
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	112000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	3000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	489000	USD
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-50000	USD
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	USD
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	USD
CY2019Q3	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	USD
CY2020Q3	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	1050885000	USD
CY2020Q3	cbfv	Financing Receivable Before Allowance For Credit Loss Percent FinancingReceivableBeforeAllowanceForCreditLossPercent	1.000
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	952496000	USD
CY2019Q4	cbfv	Financing Receivable Before Allowance For Credit Loss Percent FinancingReceivableBeforeAllowanceForCreditLossPercent	1.000
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	13780000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9867000	USD
CY2020Q3	us-gaap	Notes Receivable Net NotesReceivableNet	1037105000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	942629000	USD
	cbfv	Servicing Agent Fee Percentage ServicingAgentFeePercentage	0.0075
CY2020Q3	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	2500000	USD
CY2019Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	907000	USD
CY2020Q3	cbfv	Real Estate Loans Serviced For Others RealEstateLoansServicedForOthers	106000000.0	USD
CY2019Q4	cbfv	Real Estate Loans Serviced For Others RealEstateLoansServicedForOthers	100000000.0	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	1050885000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	952496000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	1038006000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	792000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	12087000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	1050885000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	943979000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	5616000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	2901000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	952496000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Ratio Of Nonperforming Loans To All Loans LoansAndLeasesReceivableRatioOfNonperformingLoansToAllLoans	0.0143
CY2019Q4	us-gaap	Loans And Leases Receivable Ratio Of Nonperforming Loans To All Loans LoansAndLeasesReceivableRatioOfNonperformingLoansToAllLoans	0.0057
CY2020Q3	cbfv	Financing Receivable After Allowance For Credit Loss Ratio Of Nonperforming Assets To All Assets FinancingReceivableAfterAllowanceForCreditLossRatioOfNonperformingAssetsToAllAssets	0.0109
CY2019Q4	cbfv	Financing Receivable After Allowance For Credit Loss Ratio Of Nonperforming Assets To All Assets FinancingReceivableAfterAllowanceForCreditLossRatioOfNonperformingAssetsToAllAssets	0.0042
CY2020Q3	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	805000000	USD
CY2019Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1100000	USD
CY2020Q3	cbfv	Financing Receivable Td Rs Number Of Contracts FinancingReceivableTDRsNumberOfContracts	18	loan
CY2020Q3	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	3600000	USD
CY2019Q4	cbfv	Financing Receivable Td Rs Number Of Contracts FinancingReceivableTDRsNumberOfContracts	16	loan
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	3000000.0	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
CY2019Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
CY2020Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	loan
CY2020Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	542000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	557000	USD
CY2020Q3	cbfv	Financing Receivable Allowance For Loan Losses On Troubled Debt Restructuring FinancingReceivableAllowanceForLoanLossesOnTroubledDebtRestructuring	0	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	loan
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	776000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	791000	USD
	cbfv	Financing Receivable Allowance For Loan Losses On Troubled Debt Restructuring FinancingReceivableAllowanceForLoanLossesOnTroubledDebtRestructuring	0	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
CY2019Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	10000	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	10000	USD
CY2019Q3	cbfv	Financing Receivable Allowance For Loan Losses On Troubled Debt Restructuring FinancingReceivableAllowanceForLoanLossesOnTroubledDebtRestructuring	0	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	loan
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	185000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	185000	USD
	cbfv	Financing Receivable Allowance For Loan Losses On Troubled Debt Restructuring FinancingReceivableAllowanceForLoanLossesOnTroubledDebtRestructuring	0	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	23634000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	23846000	USD
	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	28115000	USD
	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	872000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	11026000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	2855000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	11056000	USD
	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	11219000	USD
	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	336000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	34660000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	2855000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	34902000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	39334000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1208000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	7764000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	3740000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	3765000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	3985000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	203000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	4024000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	884000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	4175000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	4150000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	194000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	7764000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	884000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	7940000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	8135000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	397000	USD
	cbfv	Increase Decrease In Impaired Financing Receivable Recorded Investment IncreaseDecreaseInImpairedFinancingReceivableRecordedInvestment	26900000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12648000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	944732000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	952496000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	114000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	46000	USD
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1200000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	13780000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9867000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	275000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	188000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4000000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	13780000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2855000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	10925000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	884000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8983000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9691000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	209000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	93000	USD
CY2019Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	175000	USD
CY2020Q3	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	86604000	USD
CY2020Q3	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	36463000	USD
CY2020Q3	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	47161000	USD
CY2020Q3	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	9527000	USD
CY2020Q3	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	12183000	USD
CY2020Q3	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	4312000	USD
CY2020Q3	us-gaap	Time Deposits TimeDeposits	196250000	USD
CY2020Q3	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	61600000	USD
CY2019Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	69300000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9750000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9558000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	538000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	180000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	550000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	9750000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	803000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8947000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1628000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	293000	USD
CY2020Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1335000	USD
CY2020Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	34660000	USD
CY2020Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1016225000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	1050885000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryDueInNextRollingTwelveMonths	5000000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Of Amounts Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate	0.0209
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Next Rolling Twelve Months FederalHomeLoanBankAdvancesMaturitiesSummaryDueInNextRollingTwelveMonths	6000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Of Amounts Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate	0.0197
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearTwo	3000000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate One To Two Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate	0.0223
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Two FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearTwo	5000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate One To Two Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate	0.0218
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearThree	3000000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Two To Three Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate	0.0241
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Rolling Year Three FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRollingYearThree	3000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Two To Three Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate	0.0241
CY2020Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	11000000	USD
CY2019Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	14000000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	430700000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	416900000	USD
CY2020Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	577100000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	11000000.0	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	4000000.0	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	2900000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	884000	USD
CY2020Q3	us-gaap	Other Commitment OtherCommitment	247463000	USD
CY2019Q4	us-gaap	Other Commitment OtherCommitment	240104000	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	118000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	114000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	353000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	344000	USD
CY2020Q3	us-gaap	Variable Lease Cost VariableLeaseCost	10000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	17000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	28000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	32000	USD
CY2020Q3	us-gaap	Lease Cost LeaseCost	128000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	131000	USD
	us-gaap	Lease Cost LeaseCost	381000	USD
	us-gaap	Lease Cost LeaseCost	376000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1202000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1289000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y2M19D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y21D
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0255
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0289
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	348000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	255000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	156000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	113000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	90000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	375000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1337000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	132000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	1205000	USD
CY2020Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	155000	USD
CY2019Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	131000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	449000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	402000	USD
CY2020Q3	us-gaap	Supplies Expense SuppliesExpense	125000	USD
CY2019Q3	us-gaap	Supplies Expense SuppliesExpense	96000	USD
	us-gaap	Supplies Expense SuppliesExpense	365000	USD
	us-gaap	Supplies Expense SuppliesExpense	289000	USD
CY2020Q3	us-gaap	Postage Expense PostageExpense	61000	USD
CY2019Q3	us-gaap	Postage Expense PostageExpense	62000	USD
	us-gaap	Postage Expense PostageExpense	176000	USD
	us-gaap	Postage Expense PostageExpense	195000	USD
CY2020Q3	us-gaap	Communication Communication	108000	USD
CY2019Q3	us-gaap	Communication Communication	157000	USD
	us-gaap	Communication Communication	408000	USD
	us-gaap	Communication Communication	459000	USD
CY2020Q3	cbfv	Charitable Contributions Expense CharitableContributionsExpense	32000	USD
CY2019Q3	cbfv	Charitable Contributions Expense CharitableContributionsExpense	53000	USD
	cbfv	Charitable Contributions Expense CharitableContributionsExpense	98000	USD
	cbfv	Charitable Contributions Expense CharitableContributionsExpense	146000	USD
CY2020Q3	cbfv	Dues And Subscriptions Expense DuesAndSubscriptionsExpense	36000	USD
CY2019Q3	cbfv	Dues And Subscriptions Expense DuesAndSubscriptionsExpense	34000	USD
	cbfv	Dues And Subscriptions Expense DuesAndSubscriptionsExpense	153000	USD
	cbfv	Dues And Subscriptions Expense DuesAndSubscriptionsExpense	132000	USD
CY2020Q3	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	149000	USD
CY2019Q3	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	133000	USD
	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	420000	USD
	us-gaap	Loan Portfolio Expense LoanPortfolioExpense	345000	USD
CY2020Q3	cbfv	Meals And Entertainment Expense MealsAndEntertainmentExpense	0	USD
CY2019Q3	cbfv	Meals And Entertainment Expense MealsAndEntertainmentExpense	23000	USD
	cbfv	Meals And Entertainment Expense MealsAndEntertainmentExpense	74000	USD
	cbfv	Meals And Entertainment Expense MealsAndEntertainmentExpense	124000	USD
CY2020Q3	cbfv	Travel Expense TravelExpense	13000	USD
CY2019Q3	cbfv	Travel Expense TravelExpense	50000	USD
	cbfv	Travel Expense TravelExpense	87000	USD
	cbfv	Travel Expense TravelExpense	147000	USD
CY2020Q3	cbfv	Training Expense TrainingExpense	10000	USD
CY2019Q3	cbfv	Training Expense TrainingExpense	18000	USD
	cbfv	Training Expense TrainingExpense	24000	USD
	cbfv	Training Expense TrainingExpense	40000	USD
CY2020Q3	cbfv	Bank Assessment Expense BankAssessmentExpense	44000	USD
CY2019Q3	cbfv	Bank Assessment Expense BankAssessmentExpense	43000	USD
	cbfv	Bank Assessment Expense BankAssessmentExpense	132000	USD
	cbfv	Bank Assessment Expense BankAssessmentExpense	128000	USD
CY2020Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	59000	USD
CY2019Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	55000	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	173000	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	168000	USD
CY2020Q3	us-gaap	Other Nonrecurring Expense OtherNonrecurringExpense	127000	USD
CY2019Q3	us-gaap	Other Nonrecurring Expense OtherNonrecurringExpense	129000	USD
	us-gaap	Other Nonrecurring Expense OtherNonrecurringExpense	418000	USD
	us-gaap	Other Nonrecurring Expense OtherNonrecurringExpense	489000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	919000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	984000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2977000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	3064000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2020Q3	us-gaap	Assets Assets	1392876000	USD
CY2020Q3	us-gaap	Liabilities Liabilities	1259577000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	133299000	USD
CY2019Q4	us-gaap	Assets Assets	1321537000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	1170440000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	151097000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	11656000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	1240000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	10416000	USD
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1200000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9216000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	2173000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	28968000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-17579000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-184000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-17395000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	35712000	USD
	us-gaap	Interest Expense InterestExpense	4442000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	31270000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4000000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	27270000	USD
	us-gaap	Noninterest Income NoninterestIncome	6693000	USD
	us-gaap	Noninterest Expense NoninterestExpense	47042000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-13079000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	640000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-13719000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	13098000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	2002000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	11096000	USD
CY2019Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	175000	USD
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	10921000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	1966000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	8257000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4630000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	884000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	3746000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	38063000	USD
	us-gaap	Interest Expense InterestExpense	5828000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	32235000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	550000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	31685000	USD
	us-gaap	Noninterest Income NoninterestIncome	6245000	USD
	us-gaap	Noninterest Expense NoninterestExpense	25934000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	11996000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2346000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9650000	USD
	us-gaap	Number Of Reporting Units NumberOfReportingUnits	2	reportingUnit
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	18700000	USD
CY2019Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Goodwill Goodwill	28425000	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	18693000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	9732000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	15903000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6972000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8931000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	15903000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	245153	shares
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5376000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	10527000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	532000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2128000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2128000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2128000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1430000	USD
CY2020Q3	cbfv	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	585000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8931000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	24.36
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y6M
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	15000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	18.60
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	20106	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	22.69
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	19776	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	26.64
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	220271	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.92
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y1M6D
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	139548	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	23.67
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y7M6D
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	80723	shares
CY2020Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	24.36
	cbfv	Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonvestedWeightedAverageRemainingContractualTerm	P6Y10M24D
CY2020Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	1100000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions	1400000	USD
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	7200	USD
CY2020Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	195000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	363000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1400000	USD

Files In Submission

Name	View Source	Status
0001605301-20-000027-index-headers.html	Edgar Link	pending
0001605301-20-000027-index.html	Edgar Link	pending
0001605301-20-000027.txt	Edgar Link	pending
0001605301-20-000027-xbrl.zip	Edgar Link	pending
cbfv-20200930.htm	Edgar Link	pending
cbfv-20200930.xsd	Edgar Link	pending
cbfv-20200930xex311.htm	Edgar Link	pending
cbfv-20200930xex312.htm	Edgar Link	pending
cbfv-20200930xex321.htm	Edgar Link	pending
cbfv-20200930xex322.htm	Edgar Link	pending
cbfv-20200930_cal.xml	Edgar Link	unprocessable
cbfv-20200930_def.xml	Edgar Link	unprocessable
cbfv-20200930_g1.jpg	Edgar Link	pending
cbfv-20200930_htm.xml	Edgar Link	completed
cbfv-20200930_lab.xml	Edgar Link	unprocessable
cbfv-20200930_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
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$CBFV
CB Financial Services, Inc. Stock $cbfv

2020 Q4 Form 10-Q Financial Statement

#000160530120000027 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CBFV CB Financial Services, Inc. Stock $cbfv

2020 Q4 Form 10-Q Financial Statement

#000160530120000027 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CBFV
CB Financial Services, Inc. Stock $cbfv