Loans and Allowance for Loan Losses - Troubled debt restructurings that subsequently defaulted (Details 8) (Loans Receivable, USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012 Loan	Sep. 30, 2012 Loan
Financing Receivable, Modifications [Line Items]
Number of loans	1	2
Recorded Balance	$ 1,374	$ 1,499
Commercial
Financing Receivable, Modifications [Line Items]
Number of loans		1
Recorded Balance		125
Owner Occupied 1-4
Financing Receivable, Modifications [Line Items]
Number of loans
Recorded Balance
Non-owner Occupied 1-4
Financing Receivable, Modifications [Line Items]
Number of loans
Recorded Balance
Multi-family
Financing Receivable, Modifications [Line Items]
Number of loans
Recorded Balance
Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Number of loans	1	1
Recorded Balance	1,374	1,374
Construction
Financing Receivable, Modifications [Line Items]
Number of loans
Recorded Balance
Land
Financing Receivable, Modifications [Line Items]
Number of loans
Recorded Balance
Consumer and Home Equity
Financing Receivable, Modifications [Line Items]
Number of loans
Recorded Balance