Junior Subordinated Debentures (Details) - USD ($) $ in Thousands		6 Months Ended
	Oct. 16, 2014	Jun. 30, 2015	Dec. 31, 2014	Mar. 17, 2004
Junior subordinated debentures
Junior subordinated debentures	$ 5,100	$ 5,100	$ 5,100
Floating Rate Junior Subordinated Debentures
Junior subordinated debentures
Payment of principal amount at face value required to extend maturity	$ 900
Junior subordinated debentures				$ 6,000
Effective interest rate on debentures (as a percent)		2.82%
Number of years of quarterly payments of interest only	5 years
Floating Rate Junior Subordinated Debentures | 3-month Libor
Junior subordinated debentures
Debt instrument interest rate description		3-Month LIBOR
Basis spread (as a percent)		2.54%