Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Chapter 11 Emergence - Reorganization Items and Liabilities Subject to Compromise (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Dec. 31, 2018
Jan. 22, 2014
Jul. 30, 2013
Restructuring Cost and Reserve [Line Items]            
Gain on settlement of liabilities subject to compromise $ 0 $ (191,129) $ 0      
Fresh start valuation adjustments 0 242,567 0      
Professional fees 962 30,107 0      
Backstop premium on the rights offering paid in stock 0 11,033 0      
Other 0 399 0      
Reorganization items 962 92,977 0      
Reorganization items paid 20,132 $ 8,617 $ 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%       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%         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