Fair Value Accounting (Fair Value Inputs, Assets, Quantitative Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Trust Preferred Securities [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	$ 1,745
Private Equity Investments [Member] | Individual Analysis of Each Investment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	27,148
Visa Derivative [Member] | Probability Model [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	1,415
Collateral Dependent Impaired Loans [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	11,264
Other Loans Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	425
Other Real Estate [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	23,519
Other Assets Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	$ 3,425
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for lack of marketability	0.00%	0.00%
Credit spread embedded in discount rate	4.27%	6.00%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for lack of marketability	10.00%	10.00%
Credit spread embedded in discount rate	5.27%	6.75%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for lack of marketability	0.00%	0.00%
Credit spread embedded in discount rate	4.77%	6.39%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure		$ 1,645
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	0.00%	0.00%
Estimated selling costs	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	100.00%	100.00%
Estimated selling costs	10.00%	10.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	51.00%	46.00%
Estimated selling costs	7.00%	7.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure		$ 28,588
Fair Value, Measurements, Recurring [Member] | Private Equity Investments [Member] | Individual Analysis of Each Investee Company [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure		27,367
Fair Value, Measurements, Recurring [Member] | Visa Derivative [Member] | Probability Model [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure		$ 1,401
Fair Value, Measurements, Recurring [Member] | Other Loans Held for Sale [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	0.00%	0.00%
Estimated selling costs	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Other Loans Held for Sale [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	11.00%	11.00%
Estimated selling costs	10.00%	10.00%
Fair Value, Measurements, Recurring [Member] | Other Loans Held for Sale [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	7.00%	7.00%
Estimated selling costs	7.00%	7.00%
Fair Value, Measurements, Recurring [Member] | Other Loans Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure		$ 3,411
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	0.00%	0.00%
Estimated selling costs	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	20.00%	61.00%
Estimated selling costs	10.00%	10.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	7.00%	16.00%
Estimated selling costs	7.00%	7.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure		$ 32,046
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	0.00%	0.00%
Estimated selling costs	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	75.00%	100.00%
Estimated selling costs	10.00%	10.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	42.00%	49.00%
Estimated selling costs	7.00%	7.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure		$ 3,718