Derivative Instruments - (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Not designated as hedging instruments:
Derivative financial instruments
Derivative assets	$ 6,982	$ 9,108
Derivative liabilities	3,390	2,500
Designated as hedging instruments:
Derivative financial instruments
Derivative liabilities	3,134	3,410
Other Assets | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative assets	1,713	1,985
Other Assets | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative assets	5,252	2,643
Other Assets | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative assets	17	4,480
Other Liabilities | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative liabilities	1,713	1,985
Other Liabilities | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative liabilities	2	246
Other Liabilities | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative liabilities	1,675	269
Other Liabilities | Designated as hedging instruments: | Interest rate swaps
Derivative financial instruments
Derivative liabilities	$ 3,134	$ 3,410