Portfolio Loans And Allowance For Loan Losses (Recorded Investment Of Loans Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at End of Period	$ 20,016	$ 18,137	$ 14,984	$ 14,023	$ 14,578	$ 14,606
Ending balance: individually evaluated for impairment	5,948		545
Ending balance: collectively evaluated for impairment	14,068		14,439
Balance at End of Period	608,947		707,319
Ending balance: individually evaluated for impairment	38,236		41,075
Ending balance: collectively evaluated for impairment	570,711		666,244
Commercial And Commercial Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at End of Period	18,812	16,997	13,691	12,508	12,758	12,640
Ending balance: individually evaluated for impairment	5,948		545
Ending balance: collectively evaluated for impairment	12,864		13,146
Balance at End of Period	431,751		517,970
Ending balance: individually evaluated for impairment	38,236		41,075
Ending balance: collectively evaluated for impairment	393,515		476,895
Residential Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at End of Period	617	484	504	645	754	799
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	617		504
Balance at End of Period	89,001		93,757
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	89,001		93,757
Second And Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at End of Period	415	479	556	600	777	858
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	415		556
Balance at End of Period	79,342		86,059
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	79,342		86,059
Other Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at End of Period	172	177	233	270	289	309
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	172		233
Balance at End of Period	8,853		9,533
Ending balance: individually evaluated for impairment	0		0
Ending balance: collectively evaluated for impairment	$ 8,853		$ 9,533