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Shareholders' Equity (Stock Options) (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
May. 31, 2009
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options, percent vested on one year anniversary of grant 25.00%      
Options, monthly vesting percentage beginning after year one anniversary 2.083%      
Options, number of months vesting after one year anniversary 36      
Total intrinsic value of options exercised   $ 440 $ 979 $ 112
Total intrinsic value of outstanding options   $ 1,068    
Stock Option Plans:        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options, merit vesting period 3 years      
Stock Option Plans: | Original | 2006 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Plan modification, contractual life 10 years      
Stock Option Plans: | Modified | 2006 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Plan modification, contractual life 6 years