Fair Value (Reconciliation Of The Level 3 Input For Financial Instruments Measured On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Obligations Of States And Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning	$ 2,470	$ 2,744	$ 2,598	$ 2,751
Total gains/(losses), Included in earnings - realized
Total gains/(losses), Included in earnings - unrealized			(128)
Total gains/(losses), Included in other comprehensive income		12		5
Total gains/(losses), Purchases, sales, issuances and settlements, other, net	(2,470)		(2,470)
Balance, ending	0	2,756	0	2,756
Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning	740		745
Total gains/(losses), Included in earnings - realized
Total gains/(losses), Included in earnings - unrealized
Total gains/(losses), Included in other comprehensive income	1		(4)
Total gains/(losses), Purchases, sales, issuances and settlements, other, net
Balance, ending	741		741
Fair Value Swap [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning	(60)	(500)	(60)	(500)
Total gains/(losses), Included in earnings - realized
Total gains/(losses), Included in earnings - unrealized
Total gains/(losses), Included in other comprehensive income
Total gains/(losses), Purchases, sales, issuances and settlements, other, net	(140)	160	(140)	160
Balance, ending	$ (200)	$ (340)	$ (200)	$ (340)