Fair Value Accounting (Fair Value Inputs, Assets, Quantitative Information) (Details) (USD $) In Thousands, unless otherwise specified		12 Months Ended								9 Months Ended										12 Months Ended						9 Months Ended						12 Months Ended						9 Months Ended						12 Months Ended						9 Months Ended						12 Months Ended						9 Months Ended
	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Equity Securities [Member] Individual Analysis of Each Investment [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Minimum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Maximum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Weighted Average [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Discounted Cash Flow [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Discounted Cash Flow [Member]	Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Discounted Cash Flow [Member] Minimum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Discounted Cash Flow [Member] Maximum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Trust Preferred Securities [Member] Discounted Cash Flow [Member] Weighted Average [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Private Equity Investments [Member] Individual Analysis of Each Investment [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Private Equity Investments [Member] Individual Analysis of Each Investee Company [Member]	Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Visa Derivative [Member] Probability Model [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Visa Derivative [Member] Probability Model [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Collateral Dependent Impaired Loans [Member] Minimum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Collateral Dependent Impaired Loans [Member] Maximum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Collateral Dependent Impaired Loans [Member] Weighted Average [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Collateral Dependent Impaired Loans [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Minimum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Collateral Dependent Impaired Loans [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Maximum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Collateral Dependent Impaired Loans [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Weighted Average [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Loans Held for Sale [Member] Minimum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Loans Held for Sale [Member] Maximum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Loans Held for Sale [Member] Weighted Average [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Loans Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Minimum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Loans Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Maximum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Loans Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Weighted Average [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Real Estate [Member] Minimum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Real Estate [Member] Maximum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Real Estate [Member] Weighted Average [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Real Estate [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Minimum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Real Estate [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Maximum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Real Estate [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] Weighted Average [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Assets Held for Sale [Member] Minimum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Assets Held for Sale [Member] Maximum [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Other Assets Held for Sale [Member] Weighted Average [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Assets Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member] Minimum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Assets Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member] Maximum [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Other Assets Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member] Weighted Average [Member]		Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member] Collateral Dependent Impaired Loans [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]	Dec. 31, 2013 Fair Value, Measurements, Nonrecurring [Member] Collateral Dependent Impaired Loans [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]	Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member] Other Loans Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]	Dec. 31, 2013 Fair Value, Measurements, Nonrecurring [Member] Other Loans Held for Sale [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]	Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member] Other Real Estate [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]	Dec. 31, 2013 Fair Value, Measurements, Nonrecurring [Member] Other Real Estate [Member] Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]	Dec. 31, 2013 Fair Value, Measurements, Nonrecurring [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	$ 628							$ 1,785	$ 1,722							$ 27,232	$ 27,745	$ 4,021	$ 2,706																																																	$ 37,790	$ 170,693	$ 338	$ 9,670	$ 25,928	$ 50,070	$ 4,945
Credit spread embedded in discount rate		4.00%	[1]	4.80%	[1]	4.41%	[1]			4.50%	[1]	5.50%	[1]	5.00%	[1]
Discount to appraised value																				0.00%	[1]	65.00%	[1]	25.00%	[1]	0.00%	[1]	100.00%	[1]	48.00%	[1]	0.00%	[1]	12.00%	[1]	4.00%	[1]	0.00%	[1]	23.00%	[1]	23.00%	[1]	0.00%	[1]	7.00%	[1]	2.00%	[1]	0.00%	[1]	38.00%	[1]	16.00%	[1]	5.00%	[1]	36.00%	[1]	20.00%	[1]	9.00%	[1]	100.00%	[1]	69.00%	[1]
Estimated selling costs																				0.00%	[1]	10.00%	[1]	7.00%	[1]	0.00%	[1]	10.00%	[1]	7.00%	[1]	0.00%	[1]	10.00%	[1]	7.00%	[1]	0.00%	[1]	10.00%	[1]	7.00%	[1]	0.00%	[1]	10.00%	[1]	7.00%	[1]	0.00%	[1]	10.00%	[1]	7.00%	[1]	0.00%	[1]	10.00%	[1]	7.00%	[1]	0.00%	[1]	10.00%	[1]	10.00%	[1]

[1] The range represents management's best estimate of the high and low of the value that would be assigned to a particular input. For assets measured at fair value on a non-recurring basis, the weighted average is the measure of central tendencies; it is not the value that management is using for the asset or liability.