Loans Receivable (Details 4) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Residential Real Estate, Single Family [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	$ 327,805	$ 312,723
Consumer Home Equity [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	76,780	72,493
Consumer - Dealer Auto and RV Loans [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	48,300	47,039
Consumer - Other [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	8,045	9,255
Performing [Member] | Residential Real Estate, Single Family [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	324,227	310,263
Performing [Member] | Consumer Home Equity [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	76,282	72,091
Performing [Member] | Consumer - Dealer Auto and RV Loans [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	48,192	46,907
Performing [Member] | Consumer - Other [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	7,949	9,162
Nonperforming [Member] | Residential Real Estate, Single Family [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	3,578	2,460
Nonperforming [Member] | Consumer Home Equity [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	498	402
Nonperforming [Member] | Consumer - Dealer Auto and RV Loans [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	108	132
Nonperforming [Member] | Consumer - Other [Member]
Performing and nonperforming single family residential and consumer loans based on payment activity
Financing Receivable	$ 96	$ 93