Derivative Instruments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Derivative financial instruments
Derivative assets	$ 0	$ 208
Designated as hedging instruments:
Derivative financial instruments
Derivative instruments	2,472	1,428
Not designated as hedging instruments:
Derivative financial instruments
Derivative assets	2,742	2,611
Derivative instruments	1,320	1,888
Other Assets | Designated as hedging instruments: | Interest rate swaps
Derivative financial instruments
Derivative assets	0	208
Other Assets | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative assets	1,083	1,812
Other Assets | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative assets	1,630	464
Other Assets | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative assets	29	335
Other Liabilities | Designated as hedging instruments: | Interest rate swaps
Derivative financial instruments
Derivative instruments	2,472	1,428
Other Liabilities | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative instruments	1,083	1,812
Other Liabilities | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative instruments	0	52
Other Liabilities | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative instruments	$ 237	$ 24