Debt instrument accretion of original issue discount.

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Debt instrument deferred closing fees.

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Debt instrument interest rate stated percentage in cash.

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Debt instrument interest rate stated percentage in kind.

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Debt instrument original issue discount.

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Delayed draw term loans

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Initial term loan borrowing.

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Loans amortize rate .

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Percentage of additional amount will add to principal amount.

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Percentage of principal amount paid In event of default.

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Amount of amortization expense attributable to debt issuance costs.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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The average effective interest rate during the reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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Amount of the required periodic payments applied to principal.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Date the credit facility terminates, in YYYY-MM-DD format.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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Indebtedness divided by net capital.

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Long Term Debt - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Feb. 08, 2021	Dec. 19, 2019	Dec. 09, 2016	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Loss on debt extinguishment				$ 7,257
Debt amount, balance due				527,132	$ 503,541
Accretion of original issue discount				3,300	3,700
Amortization of debt issuance costs				$ 500	1,600
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
Loss on debt extinguishment				$ 7,300
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				$ 229,382	$ 214,541
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%
Original issue discount		$ 13,700
Deferred closing fees		$ 900
2016 Credit Agreement [Member]
Debt Instrument [Line Items]
Debt closing fees				$ 1,300
Deferred closing fees			700
2016 Credit Agreement [Member] \| First Lien Facility
Debt Instrument [Line Items]
Original issue discount			$ 6,000
Term Loans and Delayed Draw Term Loans [Member]
Debt Instrument [Line Items]
Floor interest rate	1.00%
Term loan balance due				$ 297,800
Term loan interest rate per annum during period				6.50%
Adjusted Eurocurrency Rate [Member] \| Term Loans and Delayed Draw Term Loans [Member]
Debt Instrument [Line Items]
Loan variable interest rate				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
Letter of Credit [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolving credit loans				600
Revolving Credit Loans [Member] \| 2021 Credit Agreement [Member]
Debt Instrument [Line Items]
Available borrowing capacity				$ 39,400
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 and 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
2021 Credit Agreement [Member] \| Revolving Credit Loans [Member]
Debt Instrument [Line Items]
Revolving credit loans	$ 40,000