For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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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.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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- Definition

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

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Description of the frequency of periodic payments, which may be presented in a variety of ways (for example, monthly, quarterly, annually).

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Date the credit facility first became available, 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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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Description of a specific restructuring plan and related activities including the facts and circumstances leading to the restructuring or decision to exit an activity, and the expected completion date. This concept and related items would be utilized for each plan if multiple exit plans have been implemented in the period.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Subsequent Event (Narrative) (Details) - USD ($)				9 Months Ended
Subsequent Event (Narrative) (Details) - USD ($)	Nov. 05, 2020	Oct. 28, 2020	Oct. 27, 2020	Sep. 30, 2020	Sep. 30, 2019
Subsequent Event [Line Items]
Interest Paid, Excluding Capitalized Interest, Operating Activities				$ 3,523,000	$ 2,706,000
Subsequent Event [Member] \| Facility Closing [Member]
Facility Closure
Restructuring and Related Activities, Description	On November 5, 2020 the Company announced it will close the manufacturing facility located in Batavia, Ohio in 2021. The Company has begun working with customers to relocate the business into other Core locations or to third parties.
Subsequent Event [Member] \| Facility Closing [Member] \| Geographic Concentration Risk [Member] \| Revenue Benchmark [Member]
Facility Closure
Concentration Risk, Percentage	5.00%
Subsequent Event [Member] \| Amended And Restated Credit Agreement [Member] \| Interest Rate Swaps [Member]
Subsequent Event [Line Items]
Interest Paid, Excluding Capitalized Interest, Operating Activities			$ 1,253,000
Write off of Deferred Debt Issuance Cost			$ 605,000
Subsequent Event [Member] \| Wells Fargo Bank, National Association [Member] \| The Credit Agreement [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Initiation Date			Oct. 27, 2020
Maximum borrowing capacity			$ 43,500,000
Subsequent Event [Member] \| Wells Fargo Bank, National Association [Member] \| Term loans [Member] \| The Credit Agreement [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 18,500,000
Proceeds from Issuance of Debt		$ 16,790,000
Line of Credit Facility, Frequency of Payments			monthly
Line of Credit Facility, Expiration Date			Oct. 27, 2024
Subsequent Event [Member] \| Wells Fargo Bank, National Association [Member] \| Term loans [Member] \| The Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Subsequent Event [Line Items]
Debt Instrument, Description of Variable Rate Basis		LIBOR Rate
Debt Instrument, Interest Rate, Effective Percentage		3.75%
Subsequent Event [Member] \| FGI Equipment Finance LLC [Member] \| Term loans [Member] \| Master Security Agreement [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Initiation Date			Oct. 27, 2020
Maximum borrowing capacity			$ 13,200,000
Line of Credit Facility, Frequency of Payments			monthly
Debt Instrument, Interest Rate, Effective Percentage			8.25%
Subsequent Event [Member] \| Revolving Loans [Member] \| Wells Fargo Bank, National Association [Member] \| The Credit Agreement [Member]
Subsequent Event [Line Items]
Maximum borrowing capacity			$ 25,000,000
Proceeds from Issuance of Debt		$ 8,745,000
Line of Credit Facility, Expiration Date			Oct. 27, 2024
Subsequent Event [Member] \| Revolving Loans [Member] \| Wells Fargo Bank, National Association [Member] \| The Credit Agreement [Member] \| Base Rate [Member]
Subsequent Event [Line Items]
Debt Instrument, Description of Variable Rate Basis		Base Rate
Debt Instrument, Interest Rate, Effective Percentage		4.75%