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Stock Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Number of shares      
Outstanding, beginning of year (in shares) 65,270 104,400 136,653
Granted (in shares) 0 0 0
Exercised (in shares) 0 0 0
Forfeited (in shares) (20,812) (39,130) (32,253)
Outstanding, end of year (in shares) 44,458 65,270 104,400
Exercisable, end of year (in shares) 43,189 57,487 92,336
Weighted average exercise price      
Outstanding, beginning of year (in dollars per share) $ 20.68 $ 20.73 $ 21.46
Granted (in dollars per share) 0.00 0.00 0.00
Exercised (in dollars per share) 0.00 0.00 0.00
Forfeited (in dollars per share) 21.89 20.82 23.81
Outstanding, end of year (in dollars per share) 20.11 20.68 20.73
Exercisable, end of year (in dollars per share) $ 20.25 $ 21.39 $ 21.11
Weighted average Contractual Term (in years)      
Outstanding at the end of period 11 months 27 days 1 year 4 months 28 days 1 year 11 months 5 days
Exercisable at the end of period 11 months 19 days 1 year 2 months 27 days 1 year 9 months
Aggregate Intrinsic Value      
Outstanding, end of year $ 49,828 $ 0 $ 0
Exercisable, end of year $ 46,859 $ 0 $ 0