Fair Value - Level 3 Instruments (Details) (USD $)				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, 2013	Dec. 31, 2012		Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Jun. 30, 2013 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Jun. 30, 2012 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Jun. 30, 2013 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Jun. 30, 2012 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Jun. 30, 2013 Forward Sales Commitments Derivative Financial Instruments, Assets	Dec. 31, 2012 Forward Sales Commitments Derivative Financial Instruments, Assets	Jun. 30, 2013 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Jun. 30, 2012 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Jun. 30, 2013 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Jun. 30, 2012 Mortgage Servicing Rights Derivative Financial Instruments, Assets
Rollforward of Level 3 Assets [Rollforward]
Beginning balance				$ 180,000	$ 209,000	$ 196,000	$ 217,000					$ 807,000	$ (159,000)	$ 872,844	$ 130,000	$ 612,085	$ (480,806)	$ 3,045,000	$ 2,151,000	$ 2,525,000	$ 1,871,000
Purchases, sales, issuances and settlements				0	0		0
Capitalized																		269,000	177,000	687,000	344,000
Gains/losses included in other income				(26,000)	4,000	(42,000)	(4,000)					(1,119,000)	737,000	(1,185,000)	448,000			511,000	(439,000)	613,000	(326,000)
Transfer in and out												0	0	0	0
Ending balance				154,000	213,000	154,000	213,000					(312,117)	578,000	(312,117)	578,000	612,085	(480,806)	3,825,000	1,889,000	3,825,000	1,889,000
Rollforward of Level 3 Liabilities [Rollforward]
Beginning balance								180,000	209,000	196,000	217,000
Purchases, sales, issuances and settlements								0	0		0
Gains/lossses included in other income								(26,000)	4,000	(42,000)	(4,000)
Ending balance								154,000	213,000	154,000	213,000
Other real estate owned	$ 3,812,000	$ 8,738,000	[1]

[1] Derived from audited consolidated financial statements