Fair Value - Level 3 Instruments (Details) (USD $) In Thousands, unless otherwise specified				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended					3 Months Ended		6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013		Jun. 30, 2014 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2014 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2014 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2014 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2014 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Jun. 30, 2013 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Jun. 30, 2014 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Jun. 30, 2013 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Dec. 31, 2013 Interest Rate Lock Commitments Derivative Financial Instruments, Liabilities	Dec. 31, 2013 Forward Sales Commitments Derivative Financial Instruments, Assets	Jun. 30, 2014 Forward Sales Commitments Derivative Financial Instruments, Liabilities	Jun. 30, 2014 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Jun. 30, 2013 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Jun. 30, 2014 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Jun. 30, 2013 Mortgage Servicing Rights Derivative Financial Instruments, Assets
Rollforward of Level 3 Assets [Rollforward]
Beginning balance				$ 119	$ 180	$ 132	$ 196					$ 178	$ 807	$ (23)	$ 873	$ (23)	$ 147	$ (100)	$ 4,782	$ 3,045	$ 4,536	$ 2,525
Purchases, sales, issuances and settlements				0	0	0	0
Capitalized																			149	269	285	687
Gains/losses included in other income				(13)	(26)	(26)	(42)					53	(1,119)	254	(1,185)				(160)	511	(50)	613
Transfer in and out												0	0	0	0
Ending balance				106	154	106	154					231	(312)	231	(312)	(23)	147	(100)	4,771	3,825	4,771	3,825
Rollforward of Level 3 Liabilities [Rollforward]
Beginning balance								119	180	132	196
Purchases, sales, issuances and settlements								0	0	0	0
Gains (losses) included in other income								(13)	(26)	(26)	(42)
Ending balance								106	154	106	154
Other real estate owned	$ 2,271	$ 3,267	[1]

[1] Derived from audited consolidated financial statements