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Minimum availability.

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No definition available.

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Debt Instrument, Covenant Compliance, Minimum Liquidity

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Fixed charge coverage ratio.

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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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No definition available.

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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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Percentage of principal amount of debt redeemed.

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No definition available.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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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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The effective interest rate during the reporting period.

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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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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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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Credit Facilities (Details)		1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
Credit Facilities (Details)	Jun. 02, 2021 USD ($)	Aug. 31, 2019 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Aug. 09, 2019 USD ($)	Jun. 14, 2018 USD ($)	Mar. 31, 2014 USD ($)	Mar. 27, 2014 USD ($)
Credit Facilities (Details) [Line Items]
Letters of Credit Outstanding, Amount			$ 9,700,000		$ 9,700,000
General Electric Capital Corporation Loan Agreement [Member]
Credit Facilities (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity										$ 75,000,000	$ 75,000,000
Line of Credit, Current
Letters of Credit Outstanding, Amount							10,800,000
Line of Credit Facility, Remaining Borrowing Capacity							$ 37,300,000
Line of Credit Facility, Interest Rate During Period
Amended ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 60,000,000
Fixed Charge Coverage Ratio		1
Debt Instrument, Covenant Compliance, Minimum Liquidity		$ 25,000,000
Debt Instrument, Covenant Compliance, Minimum Availability		$ 9,000,000
Debt Issuance Costs, Gross								$ 1,100,000
Amortization of Debt Issuance Costs				$ 100,000	$ 200,000	$ 300,000
JPMorgan ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 67,500,000
Line of Credit, Current
Letters of Credit Outstanding, Amount			43,100,000		43,100,000
Debt Issuance Costs, Gross			1,600,000		1,600,000
Amortization of Debt Issuance Costs					79,888
Minimum [Member] \| Amended ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Fixed Charge Coverage Ratio		1.1
Minimum [Member] \| JPMorgan ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Fixed Charge Coverage Ratio	1.1
Maximum [Member] \| JPMorgan ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Fixed Charge Coverage Ratio	1
4.25% Convertible Senior Notes (due 2018) [Member] \| General Electric Capital Corporation Loan Agreement [Member] \| Letter of Credit [Member]
Credit Facilities (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity										$ 35,000,000
Gacp Finance Co LLC [Member] \| Term Loan Agreement [Member]
Credit Facilities (Details) [Line Items]
Long-term Line of Credit			$ 20,000,000		$ 20,000,000				$ 20,000,000
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed					10.00%
Gacp Finance Co LLC [Member] \| Year One [Member] \| Term Loan Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Redemption Price, Percentage					2.00%
Gacp Finance Co LLC [Member] \| Year Two [Member] \| Term Loan Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Redemption Price, Percentage					2.00%
Gacp Finance Co LLC [Member] \| Year Three [Member] \| Term Loan Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Redemption Price, Percentage					1.00%
London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member] \| Amended ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					1.50%
London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member] \| JPMorgan ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%
London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member] \| Amended ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					2.00%
London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member] \| JPMorgan ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Base Rate [Member] \| Minimum [Member] \| Amended ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					0.50%
Base Rate [Member] \| Minimum [Member] \| JPMorgan ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Base Rate [Member] \| Maximum [Member] \| Amended ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					1.00%
Base Rate [Member] \| Maximum [Member] \| JPMorgan ABL Credit Agreement [Member]
Credit Facilities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%