Shareholders' Equity (Regulatory Captial Requirements) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Parent Company [Member]
Total Capital (to Risk-Weighted Assets):
Total Capital	$ 367,443	$ 343,934
Total Capital to Risk-Weighted Assets	12.58%	12.56%
Total Capital for Capital Adequacy Purposes	$ 233,739	$ 219,149
Total Capital for Capital Adequacy Purposes to Risk-Weighted Assets	8.00%	8.00%
Tier 1 Capital (to Risk-Weighted Assets):
Tier 1 Capital	$ 340,130	$ 315,575
Tier 1 Capital to Risk Weighted-Assets	11.64%	11.52%
Tier 1 Capital Required For Capital Adequacy Purposes	$ 175,304	$ 109,574
Tier 1 Capital Required for Capital Adequacy Purposes to Risk Weighted-Assets	6.00%	4.00%
Common Equity Tier 1 Capital [Abstract]
Common Equity Tier 1 Capital	$ 318,131
Common Equity Tier 1 Capital to Risk Weighted Assets	10.89%
Common Equity Tier 1 Required for Capital Adequacy	$ 131,478
Common Equity Tier 1 Capital for Capital Adequacy to Risk Weighted Assets	4.50%
Tier 1 Capital (to Average Assets):
Tier 1 Leverage Capital	$ 340,130	$ 315,575
Tier 1 Leverage Capital to Average Assets	9.37%	9.14%
Tier 1 Leverage Capital Required for Capital Adequacy Purposes	$ 145,191	$ 138,090
Tier 1 Leverage Capital Required for Capital Adequacy Purposes to Average Assets	4.00%	4.00%
Bank [Member]
Total Capital (to Risk-Weighted Assets):
Total Capital	$ 366,676	$ 339,268
Total Capital to Risk-Weighted Assets	12.55%	12.39%
Total Capital for Capital Adequacy Purposes	$ 233,676	$ 219,075
Total Capital for Capital Adequacy Purposes to Risk-Weighted Assets	8.00%	8.00%
Total Capital To Be Well Capitalized	$ 292,095	$ 273,844
Total Capital To Be Well Capitalized to Risk Weighted-Assets	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets):
Tier 1 Capital	$ 339,363	$ 310,909
Tier 1 Capital to Risk Weighted-Assets	11.62%	11.35%
Tier 1 Capital Required For Capital Adequacy Purposes	$ 175,257	$ 109,537
Tier 1 Capital Required for Capital Adequacy Purposes to Risk Weighted-Assets	6.00%	4.00%
Tier 1 Capital Required To Be Well Capitalized	$ 233,676	$ 164,306
Tier 1 Capital Required To Be Well Capitalized to Risk Weighted-Assets	8.00%	6.00%
Common Equity Tier 1 Capital [Abstract]
Common Equity Tier 1 Capital	$ 339,363
Common Equity Tier 1 Capital to Risk Weighted Assets	11.62%
Common Equity Tier 1 Required for Capital Adequacy	$ 131,443
Common Equity Tier 1 Capital for Capital Adequacy to Risk Weighted Assets	4.50%
Common Equity Tier 1 Capital Required to be Well Capitalized	$ 189,861
Common Equity Tier 1 Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%
Tier 1 Capital (to Average Assets):
Tier 1 Leverage Capital	$ 339,363	$ 310,909
Tier 1 Leverage Capital to Average Assets	9.36%	9.01%
Tier 1 Leverage Capital Required for Capital Adequacy Purposes	$ 145,103	$ 137,964
Tier 1 Leverage Capital Required for Capital Adequacy Purposes to Average Assets	4.00%	4.00%
Tier 1 Leverage Capital Required To Be Well Capitalized	$ 181,378	$ 172,454
Tier 1 Leverage Capital Required To Be Well Capitalized to Average Assets	5.00%	5.00%