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Stock-Based Compensation (Details) (USD $)
9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2014
Restricted Stock [Member]
Sep. 30, 2013
Restricted Stock [Member]
Restricted stock, Shares            
Restricted stock beginning balance 31,362 32,602 32,602 30,409 32,602 30,409
Restricted stock granted         6,400 8,076
Restricted shares legally vested         (7,640) (5,883)
Restricted stock ending balance 31,362 32,602 32,602 30,409 31,362 32,602
Restricted stock, Weighted Average Grant Price            
Restricted stock weighted average grant price, beginning balance $ 23.92 $ 21.30 $ 21.30 $ 19.39 $ 21.30 $ 19.39
Restricted stock weighted average grant price, granted         $ 31.25 $ 26.00
Restricted stock weighted average grant price legally vested         $ (18.91) $ (17.85)
Restricted stock weighted average grant price, ending balance $ 23.92 $ 21.30 $ 21.30 $ 19.39 $ 23.92 $ 21.30