Goodwill and Intangible Assets (Details 2) (USD $)	9 Months Ended			3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Oldham Core deposit	Sep. 30, 2013 Oldham Core deposit	Apr. 30, 2013 Oldham Core deposit
Goodwill and Intangible Assets
Intangible assets recorded on acquisition				$ 2,543,000	$ 2,298,000	$ 2,543,000
Amortization period of intangible assets				10 years
Unamortized intangible					2,298,000
Estimated fair value of MSRs	3,292,000		2,702,000
Total outstanding principal balances of loans serviced for others	432,132,000		374,079,000
Changes in the net carrying amount of finite-lived intangible MSRs
Balance at beginning of period	2,088,000	1,630,000
Originations	682,000	884,000
Amortization	(755,000)	(573,000)
Balance at end of period	$ 2,015,000	$ 1,941,000