Derivative Financial Instruments (Details 2) (Non-hedging derivative financial instruments, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivative Financial Instruments
Gain (loss)	$ 87	$ 285
Interest rate swap contracts | Other expense
Derivative Financial Instruments
Gain (loss)	6	30
Interest rate swap contracts | Other income
Derivative Financial Instruments
Gain (loss)	92	194
Loan commitments | Mortgage banking income
Derivative Financial Instruments
Gain (loss)	110	44
Forward contracts - mortgage loan | Mortgage banking income
Derivative Financial Instruments
Gain (loss)	(120)	17
Forward contracts - foreign exchange | Other income
Derivative Financial Instruments
Gain (loss)	$ (1)	$ 0