Debt instrument basis spread on variable rate option three.

No definition available.

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- Definition

Debt instrument basis spread on variable rate option two.

+ References

No definition available.

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- Definition

Debt instrument interest rate stated percentage in cash.

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No definition available.

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Debt instrument interest rate stated percentage in kind.

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No definition available.

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- Definition

Initial term loan borrowing.

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No definition available.

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- Definition

Mandatory prepayment amount.

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No definition available.

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Percentage of additional amount will add to principal amount.

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No definition available.

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- Definition

Percentage of principal amount paid In event of default.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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.

+ References

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Period Type:	instant

- Definition

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

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-Section 50
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- Definition

Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

+ References

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

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

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- Definition

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

+ References

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- Definition

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.

+ References

No definition available.

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

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-SubTopic 10
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-Paragraph 2
-Subparagraph (bbb)(2)
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- Definition

Amount of the required periodic payments applied to principal.

+ References

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- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

+ References

No definition available.

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- Definition

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

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- Definition

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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- Definition

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.

+ References

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- Definition

Date the credit facility terminates, in CCYY-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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The carrying value as of the balance sheet date of the current portion 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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- Definition

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.

+ References

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Cash payments for and related to principal collection on loans related to operating activities.

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Long Term Debt - Additional Information (Detail) - USD ($)		9 Months Ended	12 Months Ended
	Dec. 19, 2019	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 09, 2016
Debt Instrument [Line Items]
Mandatory prepayment amount		$ 0		$ 0
Total debt		499,673,000	$ 506,000,000
2016 Credit Agreement \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 30,000,000
Loan maturing date		Dec. 09, 2021
Outstanding loan amount, current		$ 0
Outstanding loan amount			$ 0
Available borrowing capacity		29,200,000
2016 Credit Agreement \| Letter of Credit [Member]
Debt Instrument [Line Items]
Outstanding loan amount		$ 800,000
LIBOR \| 2016 Credit Agreement \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loan variable interest rate		5.375%
Loan variable interest rate option two		5.625%
Loan variable interest rate option three		5.875%
First Lien Facility
Debt Instrument [Line Items]
Initial term loan borrowing					$ 340,000,000
Term loan maturity date		Dec. 09, 2022
Debt instrument, date of first required payment		Mar. 31, 2017
Payments for loans		$ 2,100,000
Quarterly principal payments increased		4,300,000
Term loan balloon payment		$ 259,300,000
Term loan interest rate per annum during period		5.875%	5.875%
Loan variable interest rate		0.00%
Term loan description of variable rate basis		For each interest period, the interest rate per annum is 5.875% plus the Adjusted Eurocurrency Rate which is defined as an amount equal to the Statutory Reserve Rate (as defined in the 2016 Credit Agreement) multiplied by the greatest of a) LIBOR, b) 0.00% per annum and c) solely with respect to the Initial Term Loans, 1.00% per annum.
Term loan balance due		$ 293,300,000	$ 306,000,000
First Lien Facility \| Adjusted Eurocurrency Rate
Debt Instrument [Line Items]
Loan variable interest rate		1.00%	2.61463%
First Lien Facility \| Term Loan
Debt Instrument [Line Items]
Loan variable interest rate		1.00%
Second Lien Facility
Debt Instrument [Line Items]
Initial term loan borrowing					$ 125,000,000
Term loan maturity date		Dec. 09, 2023
Debt instrument, date of first required payment		Dec. 19, 2019
8% Convertible Debentures Due 2024 [Member]
Debt Instrument [Line Items]
Term loan maturity date	Dec. 19, 2024
Debt principal amount	$ 200,000,000
Total debt	$ 200,000,000	$ 206,423,000	$ 200,000,000
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%