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2. Earnings Per Share Excluded (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Anti-dilutive shares 15,595 18,292 17,781 14,749
4.25% Convertible Notes        
Anti-dilutive shares 11,334 0 6,726 0
8% Convertible Notes        
Anti-dilutive shares 0 18,056 7,341 14,683
Stock Options and Restricted Stock        
Anti-dilutive shares 4,261 0 3,714 0
Warrants        
Anti-dilutive shares 0 236 0 66