Loans and Leases (Total Loans and Leases Outstanding) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 402,377		$ 403,684	$ 411,374
Less allowance for credit losses	(6,557)	(6,214)	(6,164)	(6,371)	(6,443)	(5,884)
Net loans and leases	395,820		397,520
Residential mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	25,858		26,461	26,975
Less allowance for credit losses	(406)	(378)	(383)	(497)	(386)	(454)
Commercial mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	240,188		232,297
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	94,690		101,120
Leases financing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	62		191	264
Less allowance for credit losses	(3)	(5)	(10)	(26)	(19)	(86)
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	41,579		43,615	46,452
Less allowance for credit losses	$ (261)	$ (268)	$ (260)	$ (446)	$ (482)	$ (482)