Loans and Leases (Total Loans and Leases Outstanding) (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
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 407,205		$ 403,684	$ 417,473
Less allowance for credit losses	(6,214)	(6,142)	(6,164)	(6,443)	(6,307)	(5,884)
Net loans and leases	400,991		397,520
Residential mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	26,051		26,461	28,887
Less allowance for credit losses	(378)	(376)	(383)	(386)	(521)	(454)
Commercial mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	243,383		232,297
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	94,916		101,120
Leases financing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	101		191	385
Less allowance for credit losses	(5)	(7)	(10)	(19)	(121)	(86)
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	42,754		43,615	47,195
Less allowance for credit losses	$ (268)	$ (273)	$ (260)	$ (482)	$ (486)	$ (482)