Loans and the Allowance for Loan Losses (Analysis of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
No Related Allowance: Recorded Invesment	$ 1,275		$ 1,275		$ 1,500
No Related Allowance: Unpaid Principal Balance	1,576		1,576		1,950
With An Allowance Recorded: Recorded Investment	1,410		1,410		5,435
With An Allowance Recorded: Unpaid Principal Balance	1,609		1,609		5,435
With An Allowance Recorded: Related Allowance	140		140		645
Total Impaired: Recorded Investment	2,685		2,685		6,935
Total Impaired: Unpaid Principal Balance	3,185		3,185		7,385
Total Impaired: Related Allowance	140		140		645
No Related Allowance: Average Recorded Investment	1,450	2,250	1,450	2,250
No Related Allowance: Interest Income Recognized	19	28	38	58
With An Allowance Recorded: Average Recorded Investment	5,152	11,069	5,331	11,490
With An Allowance Recorded: Interest Income Recognized	45	83	89	144
Total Impaired: Average Recorded Investment	6,602	13,319	6,781	13,740
Total Impaired: Interest Income Recognized	64	111	127	202
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
No Related Allowance: Recorded Invesment	1,275		1,275		1,500
No Related Allowance: Unpaid Principal Balance	1,576		1,576		1,950
With An Allowance Recorded: Recorded Investment	175		175		4,180
With An Allowance Recorded: Unpaid Principal Balance	374		374		4,180
With An Allowance Recorded: Related Allowance	63		63		493
Total Impaired: Recorded Investment	1,450		1,450		5,680
Total Impaired: Unpaid Principal Balance	1,950		1,950		6,130
Total Impaired: Related Allowance	63		63		493
No Related Allowance: Average Recorded Investment	1,450	2,250	1,450	2,250
No Related Allowance: Interest Income Recognized	19	28	38	58
With An Allowance Recorded: Average Recorded Investment	3,908	4,180	4,087	4,180
With An Allowance Recorded: Interest Income Recognized	34	34	68	69
Total Impaired: Average Recorded Investment	5,358	6,430	5,537	6,430
Total Impaired: Interest Income Recognized	53	62	106	127
Construction [Member]
Financing Receivable, Impaired [Line Items]
With An Allowance Recorded: Average Recorded Investment	0	2,873	0	3,093
With An Allowance Recorded: Interest Income Recognized	0	16	0	16
Total Impaired: Average Recorded Investment	0	2,873	0	3,093
Total Impaired: Interest Income Recognized	0	16	0	16
Residential mortgage [Member]
Financing Receivable, Impaired [Line Items]
With An Allowance Recorded: Recorded Investment	1,235		1,235		1,255
With An Allowance Recorded: Unpaid Principal Balance	1,235		1,235		1,255
With An Allowance Recorded: Related Allowance	77		77		152
Total Impaired: Recorded Investment	1,235		1,235		1,255
Total Impaired: Unpaid Principal Balance	1,235		1,235		1,255
Total Impaired: Related Allowance	77		77		152
With An Allowance Recorded: Average Recorded Investment	1,244	4,016	1,244	4,217
With An Allowance Recorded: Interest Income Recognized	11	33	21	59
Total Impaired: Average Recorded Investment	1,244	4,016	1,244	4,217
Total Impaired: Interest Income Recognized	$ 11	$ 33	$ 21	$ 59