Loans Receivable and Allowance for Loan Losses (Consumer Loan Credit Exposures, Performing or Nonperforming) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	$ 291,625	$ 286,218
Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	84,380	83,940
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	207,245	202,278
Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	286,269	281,477
Performing [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	81,147	81,028
Performing [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	205,122	200,449
Nonperforming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	5,356	4,741
Nonperforming [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	3,233	2,912
Nonperforming [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans receivable	$ 2,123	$ 1,829