Summary of Significant Accounting Policies (Details 3)	12 Months Ended
Dec. 31, 2014
Retirement Plans
Cash contributions (as a percent)	1.50%
Maximum
Investment in Affordable Housing Limited Partnership
Ownership percentage	5.00%

Represents the percentage of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP).

No definition available.

Name:	byfc_EmployeeStockOwnershipPlanESOPCashContributionsToESOPPercentage
Namespace Prefix:	byfc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration