Derivatives - (FV of Derivatives on the Balance Sheet) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	$ 10,420	$ 9,528
Liability derivatives fair value	1,210	1,381
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	2,443	2,187
Liability derivatives fair value	2,266	2,085
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	17,400
Other assets [Member] | Interest rate products [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	10,420	9,528
Other assets [Member] | Interest rate products [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	2,160	1,900
Other assets [Member] | Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	265	149
Other assets [Member] | Forward Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value		138
Other assets [Member] | Forward loan sales agreement | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives fair value	18
Other liabilities [Member] | Interest rate products [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value	1,210	1,381
Other liabilities [Member] | Interest rate products [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value	2,191	1,898
Other liabilities [Member] | Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value		6
Other liabilities [Member] | Forward Contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value	$ 75	20
Other liabilities [Member] | Forward loan sales agreement | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives fair value		$ 161