Correction of Error in Comparative Financial Statements (Schedule of Error Corrections and Prior Period Adjustments) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net gains	$ 1,016	$ 1,053
Income Before Taxes	19,464	6,868
Income Tax expense/(benefit)	6,473	1,271
Net Income	12,991	5,597
Net income available to common shareholders	$ 10,291	$ 2,996
Basic and diluted net income per common share	$ 1.65	$ 0.48
Return on Average Assets	0.98%
Return on Average Equity	11.40%
Total Risk-based Capital Ratio	17.21%	15.40%
Tier I Capital to Risk Weighted Assets	15.24%	14.23%
Tier I Capital to Average Assets	11.64%	11.29%
Common Equity Tier I to Risk Weighted Assets	9.99%
Retained earnings	$ 87,666	$ 77,375
Accumulated other comprehensive loss	(18,944)	(20,233)	$ (24,213)
Total Other Operating Income	26,008	13,960
Provision for income tax expense	6,473	1,271
Net Unrealized gains on investments with OTTI	1,737
Net unrealized gains on all other AFS securities	531	8,737
Other comprehensive income, net of tax	1,289	3,980
Net (gain)/loss on sales of investment securities - available-for-sale	(962)	41
Decrease (increase) in accrued interest receivable and other assets	4,223	6,993
Parent Company [Member]
Income Before Taxes	34,691	8,366
Income Tax expense/(benefit)	(975)	3,120
Net Income	12,991	5,597
Provision for income tax expense	(975)	3,120
Net unrealized gains on all other AFS securities	(2,115)
Other comprehensive income, net of tax	(2,035)	155	$ 155
Net (gain)/loss on sales of investment securities - available-for-sale	(3,521)	0
Decrease (increase) in accrued interest receivable and other assets	470	$ (1,686)
Scenario, Previously Reported [Member]
Net gains	(2,505)
Income Before Taxes	15,943
Income Tax expense/(benefit)	5,067
Net Income	10,876
Net income available to common shareholders	$ 8,176
Basic and diluted net income per common share	$ 1.31
Return on Average Assets	0.82%
Return on Average Equity	9.54%
Total Risk-based Capital Ratio	17.37%
Tier I Capital to Risk Weighted Assets	15.31%
Tier I Capital to Average Assets	11.51%
Common Equity Tier I to Risk Weighted Assets	9.92%
Retained earnings	$ 85,551
Accumulated other comprehensive loss	(16,829)
Total Other Operating Income	22,487
Provision for income tax expense	5,067
Net Unrealized gains on investments with OTTI	3,213
Net unrealized gains on all other AFS securities	1,170
Other comprehensive income, net of tax	3,404
Net (gain)/loss on sales of investment securities - available-for-sale	2,559
Decrease (increase) in accrued interest receivable and other assets	2,817
Scenario, Change [Member]
Net gains	3,521
Income Before Taxes	3,521
Income Tax expense/(benefit)	1,406
Net Income	2,115
Net income available to common shareholders	$ 2,115
Basic and diluted net income per common share	$ 0.34
Return on Average Assets	0.16%
Return on Average Equity	1.86%
Total Risk-based Capital Ratio	(0.16%)
Tier I Capital to Risk Weighted Assets	(0.07%)
Tier I Capital to Average Assets	0.13%
Common Equity Tier I to Risk Weighted Assets	0.07%
Retained earnings	$ 2,115
Accumulated other comprehensive loss	(2,115)
Total Other Operating Income	3,521
Provision for income tax expense	1,406
Net Unrealized gains on investments with OTTI	(1,476)
Net unrealized gains on all other AFS securities	(639)
Other comprehensive income, net of tax	(2,115)
Net (gain)/loss on sales of investment securities - available-for-sale	(3,521)
Decrease (increase) in accrued interest receivable and other assets	$ 1,406