Annual report pursuant to Section 13 and 15(d)

Statements of Cash Flows - Supplemental Disclosures of Cash Flows Information (Detail)

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Statements of Cash Flows - Supplemental Disclosures of Cash Flows Information (Detail) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2014
Jun. 29, 2014
Dec. 31, 2016
Dec. 31, 2015
Successor        
Cash paid during the period for:        
Interest $ 25,858   $ 48,132 $ 47,337
Income taxes 8   732 1,175
Successor | Junior Subordinated Debentures        
Cash paid during the period for:        
Interest $ 6,116   $ 12,230 $ 12,231
Predecessor        
Cash paid during the period for:        
Interest   $ 21,702    
Income taxes   856    
Predecessor | Junior Subordinated Debentures        
Cash paid during the period for:        
Interest   $ 6,116