Loans and Allowance for Loan Losses (Loan Aging Analysis by Portfolio Segment (Including Loans Past Due Over Ninety Days and Non Accrual Loans) and Summary of Non Accrual Loans) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days Past Due	$ 5,761	$ 6,006
60-89 days Past Due	3,366	3,699
Greater Than 90 Days	13,975	18,123
Total Past Due	23,102	27,828
Current	1,557,300	1,536,038
Loans ending balance	1,580,402	1,563,866
Loans > 90 Days Past Due and Accruing	455	611
Non-Accrual Loans	22,477	22,483
Residential real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days Past Due	3,218	1,459
60-89 days Past Due	684	850
Greater Than 90 Days	7,269	8,410
Total Past Due	11,171	10,719
Current	558,648	561,454
Loans ending balance	569,819	572,173
Loans > 90 Days Past Due and Accruing		193
Non-Accrual Loans	10,520	10,584
Commercial real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days Past Due	926	896
60-89 days Past Due	2,036	2,227
Greater Than 90 Days	3,301	5,380
Total Past Due	6,263	8,503
Current	534,836	497,728
Loans ending balance	541,099	506,231
Loans > 90 Days Past Due and Accruing	257	138
Non-Accrual Loans	7,799	6,719
Commercial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days Past Due	159	1,079
60-89 days Past Due	237	68
Greater Than 90 Days	1,980	2,969
Total Past Due	2,376	4,116
Current	176,827	186,338
Loans ending balance	179,203	190,454
Loans > 90 Days Past Due and Accruing	198	160
Non-Accrual Loans	2,146	3,409
Home equity loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days Past Due	1,395	2,230
60-89 days Past Due	388	355
Greater Than 90 Days	1,007	1,105
Total Past Due	2,790	3,690
Current	269,840	274,685
Loans ending balance	272,630	278,375
Loans > 90 Days Past Due and Accruing		118
Non-Accrual Loans	1,571	1,514
Consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days Past Due	63	342
60-89 days Past Due	21	199
Greater Than 90 Days	418	259
Total Past Due	502	800
Current	17,149	15,833
Loans ending balance	17,651	16,633
Loans > 90 Days Past Due and Accruing		2
Non-Accrual Loans	$ 441	$ 257