v3.8.0.1
Summary of Significant Accounting Policies - Accounts Receivable (Details) - Successor - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable $ 101,012 $ 89,237
Reserve to cover allowances for damages occurring during shipment, quality claims and doubtful accounts 2,100 1,900
Customer trade allowances $ 40,511 $ 36,691