Derivative Financial Instruments (Details 2) (Non-hedging derivative financial instruments, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Financial Instruments
Gain (loss)	$ 294	$ (847)	$ 125	$ 394
Interest rate swap contracts | Other expense
Derivative Financial Instruments
Gain (loss)	30	(2)	29	111
Interest rate swap contracts | Other income
Derivative Financial Instruments
Gain (loss)	11	169	206	567
Loan commitments | Mortgage banking income
Derivative Financial Instruments
Gain (loss)	(42)	(71)	(15)	(138)
Forward contracts - mortgage loan | Mortgage banking income
Derivative Financial Instruments
Gain (loss)	213	(943)	(173)	(146)
Forward contracts - foreign exchange | Other income
Derivative Financial Instruments
Gain (loss)	$ 82	$ 0	$ 78	$ 0