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Schedule of Antidilutive Securities Excluded from Computation of Diluted Earnings Per Share (Details) - shares
shares in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
RSUs    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities 230 289
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share    
Antidilutive securities 96 116