Loans Receivable and Allowance for Loan Losses (Consumer Loan Credit Exposures, Performing or Nonperforming) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	$ 294,229	$ 286,218
Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	82,989	83,940
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	211,240	202,278
Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	288,776	281,477
Performing [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	79,840	81,028
Performing [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	208,936	200,449
Nonperforming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	5,453	4,741
Nonperforming [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	3,149	2,912
Nonperforming [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	$ 2,304	$ 1,829