Annual report pursuant to Section 13 and 15(d)

Summary of Long-Term Debt (Detail)

v3.6.0.2
Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
4 Months Ended 8 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 12, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]        
Amortization of debt issuance costs 2 $ 226 $ 22,189 $ 4,749 $ 4,197
Credit facility 2 25,000   0  
Long-term debt 25,000   0  
Debt Instrument, Unamortized Discount 0   (20,617)  
Long-term Debt 25,000   1,245,000  
Long-term Debt, Current Maturities 0   (1,224,383)  
Senior Notes Due 2019 [Member]        
Debt Instrument [Line Items]        
Senior notes 0   300,000  
Debt Instrument, Unamortized Discount 0   (3,295)  
Senior Notes Due 2020 [Member]        
Debt Instrument [Line Items]        
Senior notes 0   775,000  
Debt Instrument, Unamortized Discount $ 0   $ (17,322)