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Employee Benefit Plans (Schedule of Restricted Stock Plan) (Details) - 2008 Restricted Stock Plan [Member] - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Shares      
Balance 127 117 114
Granted 33 33 28
Vested (12) (22) (24)
Forfeited (1) (1)
Amortization of Compensation Expense
Balance 148 127 117
Unearned compensation      
Balance $ 1,483 $ 1,216 $ 1,039
Granted $ 741 $ 711 $ 589
Vested
Forfeited $ (10) $ (12)
Amortization of Compensation Expense $ (528) (434) (400)
Balance $ 1,696 $ 1,483 $ 1,216
Weighted Average Grant Price      
Granted $ 22.65 $ 21.46 $ 21.20