Derivatives and Hedging Activities (Gains and Losses on Derivatives) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivatives Not Designated as a Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives for the three months ended	$ (436)	$ (64)
Derivatives Not Designated as a Hedging Instruments [Member] | Other Income [Member] | Interest rate products [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives for the three months ended	(540)	(65)
Derivatives Not Designated as a Hedging Instruments [Member] | Other Income [Member] | Credit contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives for the three months ended	104	1
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives for the three months ended	(145)	0
Designated as Hedging Instrument [Member] | Other Income [Member] | Hedge Advances [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives for the three months ended	$ (145)	$ 0