Derivatives and Hedging Activities Cash Flow Hedges Text Description (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) contracts	Dec. 31, 2014 USD ($)
Derivative [Line Items]
Loss on Cash Flow Hedge Ineffectiveness	$ 0.0	$ 0.0
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	1.4
Interest Rate Swap [Member] | Holding Company [Member] | Trust II $75m Cash Flow Hedge [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 75.0
Objectives for Using Derivative Instruments	The Company’s objective in using derivatives is to add stability to interest income and expense and to manage the risk related to exposure to changes in interest rates. To accomplish this objective, the Holding Company entered into an interest rate swap in the second quarter of 2010
Derivative, Term of Contract	5 years
Debt Instrument, Convertible, Effective Interest Rate	6.25%
Derivative, Average Variable Interest Rate	4.45%
Derivative, Maturity Date	Dec. 30, 2015
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 150.0
Number of Interest Rate Derivatives Held | contracts	6
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 25.0
Objectives for Using Derivative Instruments	to reduce its exposure to variability in interest-related cash outflows attributable to changes in the LIBOR swap rate associated with borrowing programs for each of the periods, initially expected to be accomplished with LIBOR-indexed brokered deposits, but may also include LIBOR-indexed FHLB advances
Derivative, Inception Date	Aug. 01, 2013
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 25.0
Objectives for Using Derivative Instruments	to reduce its exposure to variability in interest-related cash outflows attributable to changes in the LIBOR swap rate associated with borrowing programs for each of the periods, initially expected to be accomplished with LIBOR-indexed brokered deposits, but may also include LIBOR-indexed FHLB advances
Derivative, Inception Date	Mar. 01, 2014
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 6/1/14 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 25.0
Objectives for Using Derivative Instruments	to reduce its exposure to variability in interest-related cash outflows attributable to changes in the LIBOR swap rate associated with borrowing programs for each of the periods, initially expected to be accomplished with LIBOR-indexed brokered deposits, but may also include LIBOR-indexed FHLB advances
Derivative, Inception Date	Jun. 01, 2014
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 9/2/14 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 25.0
Objectives for Using Derivative Instruments	to reduce its exposure to variability in interest-related cash outflows attributable to changes in the LIBOR swap rate associated with borrowing programs for each of the periods, initially expected to be accomplished with LIBOR-indexed brokered deposits, but may also include LIBOR-indexed FHLB advances
Derivative, Inception Date	Sep. 02, 2014
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 12/1/14 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 25.0
Objectives for Using Derivative Instruments	to reduce its exposure to variability in interest-related cash outflows attributable to changes in the LIBOR swap rate associated with borrowing programs for each of the periods, initially expected to be accomplished with LIBOR-indexed brokered deposits, but may also include LIBOR-indexed FHLB advances
Derivative, Inception Date	Dec. 01, 2014
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap 2014 effective 6/1/14 [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 25.0
Objectives for Using Derivative Instruments	to reduce its exposure to variability in interest-related cash outflows attributable to changes in the LIBOR swap rate associated with borrowing programs for each of the periods, initially expected to be accomplished with LIBOR-indexed brokered deposits, but may also include LIBOR-indexed FHLB advances
Derivative, Inception Date	Jun. 01, 2014
Minimum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 years
Derivative, Fixed Interest Rate	1.17%
Minimum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 years
Derivative, Fixed Interest Rate	1.17%
Minimum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 6/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 years
Derivative, Fixed Interest Rate	1.17%
Minimum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 9/2/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 years
Derivative, Fixed Interest Rate	1.17%
Minimum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 12/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 years
Derivative, Fixed Interest Rate	1.17%
Minimum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap 2014 effective 6/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 years
Derivative, Fixed Interest Rate	1.17%
Weighted Average [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.85%
Weighted Average [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.85%
Weighted Average [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 6/1/14 [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.85%
Weighted Average [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 9/2/14 [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.85%
Weighted Average [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 12/1/14 [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.85%
Weighted Average [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap 2014 effective 6/1/14 [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.85%
Maximum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.32%
Maximum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.32%
Maximum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 6/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.32%
Maximum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 9/2/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.32%
Maximum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap effective 12/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.32%
Maximum [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Private Banking Segment [Member] | Bank $25m LIBOR Swap 2014 effective 6/1/14 [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.32%
London Interbank Offered Rate (LIBOR) [Member] | Holding Company [Member] | Trust II $75m Cash Flow Hedge [Member]
Derivative [Line Items]
Derivative, Basis Spread on Variable Rate	1.68%