Bank Loans (Schedule Of The Allowances For Loan Losses By Type) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012		Dec. 31, 2011
Allowance for loan losses	$ 6,394		$ 5,300
Percentage of loan allowance losses	100.00%	[1]	100.00%	[1]
Commercial And Industrial [Member]
Allowance for loan losses	3,482		2,595
Percentage of loan allowance losses	33.90%	[1]	29.30%	[1]
Residential Real Estate [Member]
Allowance for loan losses	838		510
Percentage of loan allowance losses	55.00%	[1]	58.20%	[1]
Commercial Real Estate [Member]
Allowance for loan losses	494		633
Percentage of loan allowance losses	7.80%	[1]	0.50%	[1]
Consumer [Member]
Allowance for loan losses	515		679
Percentage of loan allowance losses	0.40%	[1]	8.10%	[1]
Unallocated [Member]
Allowance for loan losses	$ 1,065		$ 883
Percentage of loan allowance losses	2.90%	[1]	3.90%	[1]

[1] Loan category as a percentage of total loan portfolio.