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Debt - FGI Equipment Finance LLC Term Loan (Narrative) (Details) - USD ($)		12 Months Ended
	Oct. 27, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt
Proceeds from term loan		$ 30,165,000	$ 0	$ 45,000,000
Repayments of Long-term Debt		$ 38,725,000	$ 3,375,000	$ 10,125,000
Term loans payable | FGI Equipment Finance LLC Term Loan
Debt
Debt Instrument, Issuance Date		Oct. 20, 2020
Debt Instrument, Issuer		FGI Equipment Finance LLC
Debt Instrument, Description		On October 20, 2020, the Company entered into a Master Security Agreement and a Promissory Note, among FGI Equipment Finance LLC, (“FGI”) the Company as debtor, and each of Core Composites Corporation, a subsidiary of the Company organized in Delaware, and CC HPM, S. de R.L. de C.V., a subsidiary of the Company organized in Mexico, as guarantors, a term loan in the principal amount of $13,200,000 (the “FGI Term Loan”).
Debt Instrument, Face Amount		$ 13,200,000
Proceeds from term loan	$ 12,000,000
Payments for (Proceeds from) Deposit on Loan	1,200,000
Debt Instrument, Interest Rate Terms		Interest on the FGI Term Loan is a fixed rate of 8.25% and is payable monthly.
Debt Instrument, Interest Rate, Stated Percentage		8.25%
Debt Instrument, Frequency of Periodic Payment		monthly
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid		$ 1,446,000
Long-term Debt, Maturities, Repayment Terms		Following the advance of funds by FGI, the FGI Term Loans are to be repaid in monthly principal and interest installments of $117,000 for the first 12 months, $246,000 for the subsequent 59 months and $1,446,000 due on October 31, 2026, subject to certain optional and mandatory repayment terms.
Debt Instrument, Maturity Date, Description		due on October 31, 2026, subject to certain optional and mandatory repayment terms
Debt Instrument, Maturity Date		Oct. 31, 2026
Debt Instrument, Redemption, Description		The Company may prepay in full or in part (but not less than the amount equal to 20% of the original principal amount of the loan) outstanding amounts before they are due on any scheduled Payment Date upon at least thirty (30) days’ prior written notice. The Company will pay a “Prepayment Fee” in an amount equal to an additional sum equal to the following percentage of the principal amount to be prepaid for prepayments occurring in the indicated period: four percent (4.0%) (for prepayments occurring prior to the first anniversary of the Loan); three percent (3.0%) (for prepayments occurring on and thereafter and prior to the second anniversary of the Loan); two percent (2.0%) (for prepayments occurring on and thereafter and prior to the third anniversary of the Loan ); and one percent (1.0%) (for prepayments occurring any time thereafter).
Debt Instrument, Redemption Price, Percentage		20.00%
Term loans payable | FGI Equipment Finance LLC Term Loan | Debt Instrument, Redemption, Period One
Debt
Debt Instrument, Periodic Payment		$ 117,000
Debt Instrument, Redemption, Description		first 12 months
Debt Instrument, Redemption Price, Percentage		4.00%
Term loans payable | FGI Equipment Finance LLC Term Loan | Debt Instrument, Redemption, Period Two
Debt
Debt Instrument, Periodic Payment		$ 246,000
Debt Instrument, Redemption, Description		subsequent 59 months
Debt Instrument, Redemption Price, Percentage		3.00%
Term loans payable | FGI Equipment Finance LLC Term Loan | Debt Instrument, Redemption, Period Three
Debt
Debt Instrument, Redemption Price, Percentage		2.00%
Term loans payable | FGI Equipment Finance LLC Term Loan | Debt Instrument, Redemption, Period Four
Debt
Debt Instrument, Redemption Price, Percentage		1.00%
Term loans payable | FGI Equipment Finance LLC Term Loan | KeyBank National Association
Debt
Repayments of Long-term Debt	$ 12,000,000

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