Trust Preferred Securities (Details) (USD $)	0 Months Ended	12 Months Ended
	Dec. 15, 2004	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Subordinated Borrowing [Line Items]
Private placement, trust preferred securities, aggregate amount	$ 20,000,000
Trust preferred securities		20,619,000	20,619,000
LIBOR plus percentage		1.95%
Interest expense on trust preferred securities		752,000	756,000	1,180,000
Trust Preferred Securities [Member]
Subordinated Borrowing [Line Items]
Maturity date		Dec. 31, 2034
Fixed Interest Rate Subsequent 7 Years [Member]
Subordinated Borrowing [Line Items]
Amount of hedged item		$ 10,000,000
Fixed interest rate		5.23%
Fixed rate, expiration date		Dec. 15, 2016