XML 51 R38.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock-Based Compensation Plans (Schedule of Allocation of Share-based Compensation Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation $ 890 $ 933 $ 3,225 $ 2,998
Stock Options [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation 249 192 726 573
Restricted Stock [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation 116 116 345 306
Restricted Stock Units (RSUs) [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based Compensation 525 625 2,154 2,119
Phantom Share Units (PSUs) [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Deferred Compensation Arrangement with Individual, Compensation Expense $ 878 $ 307 $ 397 $ 1,033