Investment Securities (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Security Owned and Pledged As Collateral Carrying Value	$ 139,600,000		$ 139,600,000
Investment Portfolio, Number Of Securities	378		378
Investment Portfolio, Number Of Securities, Unrealized Loss	19		19
Realized Investment Gains (Losses)	103,000		528,000	49,000
Realized Investment Gains Losses, Net Of Tax	67,000		343,000	32,000
Other Than Temporary Impairment Write Down Of Debt Obligations Gross				2,200
Collateralized Debt Obligations Recognized Other Than Temporary Impairment	3,600,000		3,600,000		3,600,000
Other Than Temporary Impairment Write Down Of Debt Obligations Net				1,400
Collateralized Debt Obligations Paying Principal and Interest	2,000,000		2,000,000
Collateralized Debt Obligations Recognized Under Other Than Temporary Impairment Recognized Prior Period	1,600,000		1,600,000		80,000
Deferred Collateral Assumed Recovery Rate For Banks	10.00%		10.00%
Deferred Collateral Assumed Recovery Rate For Insurance Companies	15.00%		15.00%
Other Comprehensive Income (Loss), before Tax			$ 747,000	$ 854,000
Debt Instrument Debt Default Percentage	28.40%	29.70%