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Long Term Debt - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Feb. 08, 2021
Dec. 19, 2019
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 09, 2016
Debt Instrument [Line Items]              
Loss on debt extinguishment         $ 7,257    
Debt amount, balance due       $ 531,910   $ 527,132  
First Lien Facility              
Debt Instrument [Line Items]              
Initial term loan borrowing             $ 340,000
Term loan maturity date       Dec. 09, 2022      
Second Lien Facility              
Debt Instrument [Line Items]              
Initial term loan borrowing             $ 125,000
Term loan maturity date       Dec. 09, 2023      
Convertible Debentures Due 2024 [Member]              
Debt Instrument [Line Items]              
Debt principal amount   $ 200,000          
Term loan maturity date   Dec. 19, 2024          
Debt amount, balance due       $ 236,410   229,382  
Debt interest rate in cash   4.00%          
Debt interest rate in kind   4.00%          
Debt periodic payment       bear interest at an annual rate of 4.00% in cash, payable quarterly, and 4.00% in kind, accrued quarterly, on the last business day of March, June, September and December.      
Percentage of amount will add to principal amount       3.00%      
Principal amount of debt redeemed   100.00%          
Debt conversion price per share   $ 18          
Percentage of principal amount paid in event of default       25.00%      
Term Loans and Delayed Draw Term Loans [Member]              
Debt Instrument [Line Items]              
Floor interest rate 1.00%            
Term loan balance due       $ 295,500   $ 297,800  
Term loan interest rate per annum during period       6.50%   6.50%  
Adjusted Eurocurrency Rate [Member] | Term Loans and Delayed Draw Term Loans [Member]              
Debt Instrument [Line Items]              
Loan variable interest rate       3.67414%   1.00%  
Revolving Credit Facility [Member] | 2016 Credit Agreement [Member]              
Debt Instrument [Line Items]              
Maximum borrowing capacity       $ 30,000      
Loan maturing date       Jun. 09, 2022      
Loss on debt extinguishment     $ 7,300        
2021 Credit Agreement [Member]              
Debt Instrument [Line Items]              
Debt principal amount $ 300,000            
Delayed draw term loans 50,000            
Debt instrument, maturity description       The Initial Term Loans, Delayed Draw Term Loans and Revolving Credit Loans are each scheduled to mature on the earlier of February 8, 2026 or six months prior to maturity of our Debentures due in December 2024. The Initial Term Loans and Delayed Draw Term Loans may be voluntarily repaid at any time but may be subject to a prepayment premium. The Initial Term Loans and Delayed Draw Term Loans are required to be repaid under certain circumstances, including with Excess Cash Flow (as defined in the 2021 Credit Agreement), the proceeds of an Asset Sale or Casualty Event (each as defined in the 2021 Credit Agreement) and the proceeds of certain refinancing indebtedness.      
Debt instrument, closing fees $ 8,000            
2021 Credit Agreement [Member] | Maximum [Member]              
Debt Instrument [Line Items]              
Debt instrument, net leverage ratio 7.00            
2021 Credit Agreement [Member] | Minimum [Member]              
Debt Instrument [Line Items]              
Debt instrument, net leverage ratio 1.00            
2021 Credit Agreement [Member] | Term Loans and Delayed Draw Term Loans [Member]              
Debt Instrument [Line Items]              
Loans amortize rate 1.00%            
Quarterly installment $ 800            
2021 Credit Agreement [Member] | Adjusted Eurocurrency Rate [Member] | Term Loans and Delayed Draw Term Loans [Member]              
Debt Instrument [Line Items]              
Loan variable interest rate 6.50%            
2021 Credit Agreement [Member] | Base Rate [Member] | Term Loans and Delayed Draw Term Loans [Member]              
Debt Instrument [Line Items]              
Loan variable interest rate 5.50%            
2021 Credit Agreement [Member] | Revolving Credit Facility [Member]              
Debt Instrument [Line Items]              
Revolving credit loans $ 40,000            
2021 Credit Agreement [Member] | Revolving Credit Facility [Member] | Adjusted Eurocurrency Rate [Member]              
Debt Instrument [Line Items]              
Loan variable interest rate 4.00%            
2021 Credit Agreement [Member] | Revolving Credit Facility [Member] | Base Rate [Member]              
Debt Instrument [Line Items]              
Loan variable interest rate 3.00%            
2021 Credit Agreement [Member] | Letter of Credit [Member]              
Debt Instrument [Line Items]              
Revolving credit loans $ 10,000     $ 600      
2021 Credit Agreement [Member] | Revolving Credit Loans [Member]              
Debt Instrument [Line Items]              
Revolving credit loans $ 40,000            
Available borrowing capacity       $ 39,400