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Shareholders' Equity (Intrinsic Value of Stock Options) (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Stockholders' Equity Note [Abstract]    
Aggregate intrinsic value of options outstanding $ 2,229 $ 3,825
Aggregate intrinsic value of options exercisable 1,938 1,556
Total intrinsic value of options exercised $ 1,785 $ 2,400
Intrinsic value of options at the date of grant