Nature of Business and Its Significant Accounting Policies - Intangible Assets and Amortization (Details) $ in Millions	12 Months Ended
Dec. 31, 2012 USD ($) loan
Nature of Business and Its Significant Accounting Policies
Number of FHLB borrowings restructured \| loan	3
Prepayment penalty \| $	$ 1.6

Amount of penalties incurred in the satisfaction or roll-over of Federal Home Loan Bank (FHLB) advance.

No definition available.

Name:	dbcp_FederalHomeLoanBankBorrowingPrepaymentPenalty
Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration