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Stock Compensation Plans (Vesting Terms) (Details) - Restricted Stock And Share Unit [Member] - shares
shares in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 342 1,046 510
50% immediately, 50% 1 year anniversary of grant [Member] [Domain]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 0 456 187
50% 1 year anniversary of grant, 50% 2 year anniversary of grant [Member] [Domain] [Domain]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 0 0 150
25 Percent Per Year For Four Years [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 4 39 56
25% immediately, 25% each employment anniversary thereafter [Domain]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 0 0 18
100% immediately [Domain]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 69 54 5
33 Percent Immediately, 33 Percent Per Year Thereafter [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 0 0 94
33 Percent January 1, 2013, 25 Percent 2 Year, 25 Percent Each Year Thereafter [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 0 459 0
33.3% per year for three years [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 269 38 0