Fair Value - Level 3 Instruments (Details) (USD $)				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012		Sep. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Sep. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Sep. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Sep. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Assets	Sep. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Sep. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Sep. 30, 2013 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Sep. 30, 2012 Interest Rate Swap Agreements Derivative Financial Instruments, Liabilities	Sep. 30, 2013 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Sep. 30, 2012 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Sep. 30, 2013 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Sep. 30, 2012 Interest Rate Lock Commitments Derivative Financial Instruments, Assets	Sep. 30, 2013 Forward Sales Commitments Derivative Financial Instruments, Assets	Dec. 31, 2012 Forward Sales Commitments Derivative Financial Instruments, Assets	Sep. 30, 2013 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Sep. 30, 2012 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Sep. 30, 2013 Mortgage Servicing Rights Derivative Financial Instruments, Assets	Sep. 30, 2012 Mortgage Servicing Rights Derivative Financial Instruments, Assets
Rollforward of Level 3 Assets [Rollforward]
Beginning balance				$ 154,000	$ 213,000	$ 196,000	$ 217,000					$ (312,000)	$ 578,000	$ 872,844	$ 130,000	$ (259,855)	$ (480,806)	$ 3,825,000	$ 1,889,000	$ 2,525,000	$ 1,871,000
Purchases, sales, issuances and settlements				0	0	0	0
Capitalized																		506,000	300,000	1,193,000	645,000
Gains/losses included in other income				(8,000)	0	(50,000)	(4,000)					796,000	(1,069,000)	(389,000)	(621,000)			50,000	(153,000)	663,000	(480,000)
Transfer in and out												0	0	0	0
Ending balance				146,000	213,000	146,000	213,000					483,935	(491,000)	483,935	(491,000)	(259,855)	(480,806)	4,381,000	2,036,000	4,381,000	2,036,000
Rollforward of Level 3 Liabilities [Rollforward]
Beginning balance								154,000	213,000	196,000	217,000
Purchases, sales, issuances and settlements								0	0	0	0
Gains (losses) included in other income								(8,000)	0	(50,000)	(4,000)
Ending balance								146,000	213,000	146,000	213,000
Other real estate owned	$ 2,989,000	$ 8,738,000	[1]

[1] Derived from audited consolidated financial statements