Loans (Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	$ 18,780	[1]		$ 18,780	[1]		$ 29,079	[1]
Total Unpaid Principal of Impaired Loans	21,293			21,293			32,558
Related Allowance on Impaired Loans	1,311			1,311			1,815
Average Recorded Investment of Impaired Loans	22,179		30,661	25,026		33,029
Interest Income Recognized on Impaired Loans	143		323	318		645
Accrued Interest	16			16			46
Accrued Income Receivable [Member]
Financing Receivable, Impaired [Line Items]
Accrued Interest	17			17			46
Commercial Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	14,186	[1]		14,186	[1]		22,477	[1]
Total Unpaid Principal of Impaired Loans	15,983			15,983			25,196
Related Allowance on Impaired Loans	727			727			1,168
Residential Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	4,227	[1]		4,227	[1]		5,989	[1]
Total Unpaid Principal of Impaired Loans	4,851			4,851			6,609
Related Allowance on Impaired Loans	582			582			495
Consumer Segment [Member]
Financing Receivable, Impaired [Line Items]
Total Recorded Investment of Impaired Loans	367	[1]		367	[1]		613	[1]
Total Unpaid Principal of Impaired Loans	459			459			753
Related Allowance on Impaired Loans	2			2			152
Class of Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	5,063	[1]		5,063	[1]		11,098
Recorded Investment of Impaired Loans with Related Allowance	13,717	[1]		13,717	[1]		17,981	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	5,437			5,437			11,167
Unpaid Principal of Impaired Loans with Related Allowance	15,856			15,856			21,391
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	1,311			1,311			1,815
Commercial Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	1,158	[1]		1,158	[1]		7,093	[1]
Recorded Investment of Impaired Loans with Related Allowance	2,696	[1]		2,696	[1]		5,023	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	1,155			1,155			7,076
Unpaid Principal of Impaired Loans with Related Allowance	3,901			3,901			6,760
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	204			204			329
Average Recorded Investment of Impaired Loans	5,773		15,231	8,382		16,682
Interest Income Recognized on Impaired Loans	35		149	105		322
Commercial Construction and Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	0	[1]		0	[1]		0	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	0			0			0
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	0			0			0
Average Recorded Investment of Impaired Loans	0		0	0		0
Interest Income Recognized on Impaired Loans	0		0	0		0
Commercial Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	2,681	[1]		2,681	[1]		1,622	[1]
Recorded Investment of Impaired Loans with Related Allowance	7,651	[1]		7,651	[1]		8,739	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	2,677			2,677			1,620
Unpaid Principal of Impaired Loans with Related Allowance	8,250			8,250			9,740
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	523			523			839
Average Recorded Investment of Impaired Loans	11,257		8,564	11,049		10,014
Interest Income Recognized on Impaired Loans	84		117	158		211
Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	1,224	[1]		1,224	[1]		2,383	[1]
Recorded Investment of Impaired Loans with Related Allowance	3,003	[1]		3,003	[1]		3,606	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	1,605			1,605			2,471
Unpaid Principal of Impaired Loans with Related Allowance	3,246			3,246			4,138
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	582			582			495
Average Recorded Investment of Impaired Loans	4,743		6,114	5,102		5,574
Interest Income Recognized on Impaired Loans	18		46	45		90
Homeowner Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	0	[1]		0	[1]		0	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	0			0			0
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	0			0			0
Average Recorded Investment of Impaired Loans	0		0	0		0
Interest Income Recognized on Impaired Loans	0		0	0		0
Home Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	105	[1]		105	[1]		278	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	172			172			373
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	0			0			82
Average Recorded Investment of Impaired Loans	138		96	191		101
Interest Income Recognized on Impaired Loans	0		2	1		3
Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	123	[1]		123	[1]		130	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	147			147			153
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	1			1			1
Average Recorded Investment of Impaired Loans	125		396	148		427
Interest Income Recognized on Impaired Loans	3		5	4		11
Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment of Impaired Loans with No Related Allowance	0	[1]		0	[1]		0	[1]
Recorded Investment of Impaired Loans with Related Allowance	139	[1]		139	[1]		205	[1]
Unpaid Principal of Impaired Loans with No Related Allowance	0			0			0
Unpaid Principal of Impaired Loans with Related Allowance	140			140			227
No Related Allowance on Impaired Loans	0			0			0
Related Allowance on Impaired Loans	1			1			69
Average Recorded Investment of Impaired Loans	143		260	154		231
Interest Income Recognized on Impaired Loans	$ 3		$ 4	$ 5		$ 8

[1] The recorded investment in impaired loans consists of unpaid principal balance, net of charge-offs, interest payments received applied to principal and unamortized deferred loan origination fees and costs. For impaired accruing loans (including those troubled debt restructurings for which management has concluded that the collectibility of the loan is not in doubt), the recorded investment also includes accrued interest. As of June 30, 2012 and December 31, 2011, recorded investment in impaired loans included accrued interest of $17 thousand and $46 thousand, respectively.