Other Noninterest Expense (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Other Non-Interest Expense [Line Items]
Federal Home Loan Bank Pre Payment Penalties	$ 2.0

Interest expense on pre payment penalties for federal home loan banks.

No definition available.

Name:	fdef_FederalHomeLoanBankPrePaymentPenalties
Namespace Prefix:	fdef_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration