Deposits (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
NOW account and other demand deposits	$ 8,576,000	$ 12,006,000
Non-interest bearing demand deposits	20,937,000	18,951,000
Money market deposits	16,266,000us-gaap_DepositsMoneyMarketDeposits	15,494,000us-gaap_DepositsMoneyMarketDeposits
Passbook	36,970,000us-gaap_DepositsSavingsDeposits	37,900,000us-gaap_DepositsSavingsDeposits
Certificates of deposit	135,118,000us-gaap_TimeDeposits	130,054,000us-gaap_TimeDeposits
Total	217,867,000us-gaap_Deposits	214,405,000us-gaap_Deposits
Brokered deposits	0	1,500,000
Aggregate amount of certificates of deposits in denominations of $250,000 or more	26,100,000byfc_TimeDeposits250000OrMore	23,700,000byfc_TimeDeposits250000OrMore
Scheduled maturities of certificates of deposit
2015	99,411,000us-gaap_TimeDepositMaturitiesYearOne
2016	22,684,000us-gaap_TimeDepositMaturitiesYearTwo
2017	10,434,000us-gaap_TimeDepositMaturitiesYearThree
2018	1,207,000us-gaap_TimeDepositMaturitiesYearFour
2019	1,221,000us-gaap_TimeDepositMaturitiesYearFive
Thereafter	161,000
Total	135,118,000us-gaap_TimeDeposits	130,054,000us-gaap_TimeDeposits
Principal officers and directors
Total	$ 1,700,000	$ 2,000,000

The aggregate amount of domestic and foreign time deposit liabilities in denominations of $250,000 or more

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.12)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 9

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- Definition

Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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- Definition

Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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- Definition

Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities.

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- Definition

Amount of interest-bearing domestic checking deposit liabilities.

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- Definition

Amount of money in noninterest-bearing domestic accounts that entitle the depositor to withdraw funds at any time without prior notice, also known as demand deposits.

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- Definition

Amount of time deposits maturing after the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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Amount of time deposits maturing in the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the fourth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the next fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the third fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of time deposits maturing in the second fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

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