Junior Subordinated Debentures (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010
Debt Instrument [Line Items]
Junior subordinated debentures	$ 7,732	$ 7,732
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Interest rate on notes payable	1.70%
Interest rate description	The debentures currently pay a variable rate of interest based on changes in the three-month LIBOR plus 1.70%, adjusted quarterly.			Entered into a cash flow hedge to fix the payments of interest (excluding the credit spread) on the debentures for a seven-year period ending September 2017 at a rate of 2.72%. Including the credit spread, the net interest due on the notes until September 2017 will be equal to a fixed rate of 4.42%.
Interest rate on notes payable	4.42%
Interest expense on junior subordinated debentures	$ 340	$ 341	$ 342