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Income (Loss) Per Share (Details) - shares
shares in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Weighted Average Shares Outstanding Details [Table]      
Number of weighted average common shares outstanding 124,101 114,499 87,286
Assumed exercise of stock options 0 0 0
Average diluted shares outstanding 124,101 114,499 87,286