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Earnings Per Share Schedule of Earnings per Share, Basic and Diluted (Details) - shares
shares in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]      
Weighted Average Number of Shares Outstanding, Basic 84,180 78,180 76,821
Weighted Average Number Diluted Shares Outstanding Adjustment 161 2,314 567
Weighted Average Number of Shares Outstanding, Diluted 84,341 80,494 77,388