Derivative Instruments - (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Designated as hedging instruments:
Derivative financial instruments
Derivative liabilities	$ 6,328	$ 4,266
Not designated as hedging instruments:
Derivative financial instruments
Derivative assets	10,448	7,498
Derivative liabilities	8,064	3,053
Other Assets | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative assets	4,181	2,544
Other Assets | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative assets	6,231	4,508
Other Assets | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative assets	36	446
Other Liabilities | Designated as hedging instruments: | Interest rate swaps
Derivative financial instruments
Derivative liabilities	6,328	4,266
Other Liabilities | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative liabilities	4,181	2,544
Other Liabilities | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative liabilities	95	0
Other Liabilities | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative liabilities	$ 3,788	$ 509