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Note 2 - Chapter 11 Proceeding and Emergence - Reorganization Items (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 01, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Total reorganization items      
Predecessor [Member]          
Gain on settlement of liabilities subject to compromise $ 666,399        
Net loss on fresh start fair value adjustments (358,557)        
Professional fees (13,435)        
Vendor claims adjustment (438)        
Total reorganization items $ 293,969   $ (40,877)   $ (40,877)