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Stock Incentive Plans (Plan duration - Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Compensation expense for stock options and restricted stock grants $ 30,000 $ 52,000
Unrecognized compensation expense related to the non-vested awards $ 36,000  
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Plan duration 10 years