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Earnings Per Common Share and Share Awards Share-Based Assumptions (Details)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share [Abstract]      
Expected Life (in years) 7 years 6 years 10 months 24 days 5 years
Volatility 40.70% 39.90% 44.60%
Interest Rate 2.00% 2.10% 1.30%
Yield Rate 0.40% 0.40% 0.50%