Debt (Details) - USD ($)		5 Months Ended	12 Months Ended
	Jul. 31, 2015	Dec. 31, 2015	Dec. 31, 2016	Nov. 18, 2015
Line of Credit Facility [Line Items]
Excess cash flows, repayment of debt, percentage			50.00%
Excess cash flows threshold for dividend			$ 5,000,000
Accretion of debt issuance costs		$ 800,000	2,300,000
Credit Facility
Line of Credit Facility [Line Items]
Repayments of principal in next 12 months			15,250,000
Cap on dividends paid and shares and warrants that can be repurchased per fiscal year under restrictive covenants			12,000,000
Outstanding loan balance			418,625,000
Term Loan
Line of Credit Facility [Line Items]
Total Term Loan outstanding		410,536,000	408,246,000
Less: Amounts due within one year		4,250,000	15,250,000
Total long-term debt due after one year		406,286,000	392,996,000
Debt issuance costs incurred			12,900,000
Unamortized deferred issuance costs		12,300,000	10,400,000
Repayments of principal in next 12 months			15,250,000
Face amount	$ 425,000,000
Revolving loan
Line of Credit Facility [Line Items]
Maximum borrowing available	25,000,000
Letter-of-credit sub-facility
Line of Credit Facility [Line Items]
Maximum borrowing available	$ 10,000,000
Letters of credit issued, amount			$ 900,000
Effective interest rate, percent			6.38%
Successor
Line of Credit Facility [Line Items]
Less: Amounts due within one year		4,250,000	$ 15,250,000
Total long-term debt due after one year		$ 406,286,000	392,996,000
Successor | Credit Facility
Line of Credit Facility [Line Items]
Cap on dividends paid and shares and warrants that can be repurchased per fiscal year under restrictive covenants				$ 12,000,000
Aggregate purchase price of outstanding warrants that can be redeemed or repurchased				$ 10,000,000
Successor | Credit Facility | Alternate base rate
Line of Credit Facility [Line Items]
Margin of interest (as a percent)	3.75%
Successor | Credit Facility | LIBOR
Line of Credit Facility [Line Items]
Margin of interest (as a percent)	4.75%
Variable rate base minimum (as a percent)	1.00%
Successor | Term Loan
Line of Credit Facility [Line Items]
Debt issuance costs incurred	$ 12,900,000
Amortization per year (as a percent)	1.00%
Outstanding loan balance			418,600,000
Successor | Revolving loan
Line of Credit Facility [Line Items]
Debt issuance costs incurred	$ 1,300,000
Outstanding loan balance			0
Successor | Letter-of-credit sub-facility
Line of Credit Facility [Line Items]
Credit facility amount outstanding			0
Level 2 | Term Loan
Line of Credit Facility [Line Items]
Fair value of long-term debt			380,900,000
Prepayment Due to Excess Cash Flow Provision | Term Loan
Line of Credit Facility [Line Items]
Repayments of principal in next 12 months			$ 11,000,000