Quarterly report pursuant to Section 13 or 15(d)

Chapter 11 Emergence - Reorganization Items and Liabilities Subject to Compromise (Details)

v3.19.1
Chapter 11 Emergence - Reorganization Items and Liabilities Subject to Compromise (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Jan. 22, 2014
Jul. 30, 2013
Restructuring Cost and Reserve [Line Items]          
Gain on settlement of liabilities subject to compromise $ (191,129)        
Fresh start valuation adjustments 242,567        
Professional fees 30,107        
Backstop premium on the rights offering paid in stock 11,033        
Other 399        
Reorganization items 92,977 $ 0      
Liabilities subject to compromise 0   $ 600,996    
Predecessor 6.75% senior notes, due July 2022          
Restructuring Cost and Reserve [Line Items]          
Debt instrument fixed interest rate       6.75%  
Liabilities subject to compromise, long-term debt 0   360,000    
Predecessor 7.50% senior notes, due August 2020          
Restructuring Cost and Reserve [Line Items]          
Debt instrument fixed interest rate         7.50%
Liabilities subject to compromise, long-term debt 0   225,000    
Senior Notes          
Restructuring Cost and Reserve [Line Items]          
Liabilities subject to compromise, long-term debt $ 0   $ 15,996