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Debt - Wells Fargo Revolving Loan (Narrative) (Details) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 28, 2020 | Oct. 27, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Debt |  |  |  |  |
Proceeds from Lines of Credit |  |  | $ 56,793,000 | $ 194,414,000 | $ 133,848,000
Repayments of Long-term Debt |  |  | 38,725,000 | 3,375,000 | $ 10,125,000
Debt origination fees, Gross |  |  | $ 1,957,000 | $ 807,000 |
Incremental revolving commitment |  |  |  |  |
Debt |  |  |  |  |
Line of Credit Facility, Description |  |  | The Credit Agreement also makes available to the Company an incremental revolving commitment in the maximum amount of $10,000,000 at the Company’s option at any time during the three (3) year period following the closing. |  |
Term loans payable | Wells Fargo Bank, National Association |  |  |  |  |
Debt |  |  |  |  |
Long-term Debt, Weighted Average Interest Rate, at Point in Time |  |  | 3.77% |  |
Debt origination fees, gross, line of credit facility |  |  | $ 1,730,000 |  |
Term loans payable | Wells Fargo Bank, National Association | KeyBank National Association |  |  |  |  |
Debt |  |  |  |  |
Repayments of Long-term Debt | $ 16,790,000 |  |  |  |
Term loans payable | Wells Fargo Bank, National Association | Libor Rate |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Description of Variable Rate Basis |  |  | LIBOR |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 3.00% |  |
Term loans payable | Wells Fargo Bank, National Association | Libor Rate | Minimum |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.00% |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 0.75% |  |
Term loans payable | Wells Fargo Bank, National Association | Base Rate |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Description of Variable Rate Basis |  |  | base rate |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.00% |  |
Term loans payable | Wells Fargo Bank, National Association | Base Rate | Minimum |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 1.00% |  |
Term loans payable | Wells Fargo Bank, National Association | Federal Funds Rate |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 0.50% |  |
Term loans payable | FGI Equipment Finance LLC Term Loan |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 8.25% |  |
Debt origination fees, Gross |  |  | $ 308,000 |  |
Term loans payable | FGI Equipment Finance LLC Term Loan | KeyBank National Association |  |  |  |  |
Debt |  |  |  |  |
Repayments of Long-term Debt |  | $ 12,000,000 |  |  |
Revolving loans | Wells Fargo Bank, National Association |  |  |  |  |
Debt |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  | Oct. 27, 2020 |  |
Line of Credit Facility, Description |  |  | On October 27, 2020, the Company entered into a credit agreement (the “Credit Agreement”) with Wells Fargo Bank, National Association, as administrative agent, lead arranger and book runner, and the lenders party thereto (the “Lenders”). Pursuant to the terms of the Credit Agreement, the Lenders made available to the Company a revolving loan commitment (the “WF Revolving Loan”) of $25,000,000 ($8,745,000 of which was advanced to the Company on October 28, 2020). |  |
Maximum borrowing capacity |  |  | $ 25,000,000 |  |
Line of Credit Facility, Borrowing Capacity, Description |  |  | The borrowing availability under the line of credit is the lesser of (a) the loan commitment of $25,000,000 or (b) the sum of 90% of eligible investment grade accounts receivable, 85% of non-investment grade eligible accounts receivable and 65% of eligible inventory. |  |
Proceeds from Lines of Credit | 8,745,000 |  |  |  |
Line of Credit Facility, Interest Rate Description |  |  | At the option of the Company, the WF Revolving Loan bears interest at a per annum rate equal to LIBOR plus a margin of 200 to 250 basis points or base rate plus a margin of 100 to 150 basis points, with the margin rate being based on the excess availability amount under the line of credit. LIBOR rate means the greater of (a) 0.75% per annum and (b) the per annum published LIBOR rate for interest periods of one, three or six months as chosen by the Company. Base rate is the greater of (a) 1.0% per annum, (b) the Federal Funds Rate plus 0.5%, (c) LIBOR Rate plus 100 basis and (d) prime rate. The weighted average interest rate was 4.75% as of December 31, 2020. |  |
Long-term Debt, Weighted Average Interest Rate, at Point in Time |  |  | 4.75% |  |
Line of Credit Facility, Expiration Date |  |  | Nov. 30, 2024 |  |
Line of Credit Facility, Frequency of Payment and Payment Terms |  |  | The WF Revolving Loan commitment terminates, and all outstanding borrowings thereunder must be repaid, by November 30, 2024. |  |
Current Borrowing Capacity |  |  | $ 19,223,000 |  |
Revolving Line of Credit |  |  | $ 420,000 |  |
Line of Credit Facility, Covenant Terms |  |  | The WF Revolving Loan contains the same covenants as the WF Term Loans. |  |
Line of Credit Facility, Covenant Compliance |  |  | The Company is in compliance with its covenants as of December 31, 2020. |  |
Letters of Credit Outstanding, Amount |  |  | $ 160,000 |  |
Debt origination fees, Gross |  |  | 1,957,000 |  |
Revolving loans | Wells Fargo Bank, National Association | Letter of Credit [Member] |  |  |  |  |
Debt |  |  |  |  |
Maximum borrowing capacity |  |  | $ 2,000,000 |  |
Revolving loans | Wells Fargo Bank, National Association | Eligible investment grade | Accounts Receivable |  |  |  |  |
Debt |  |  |  |  |
Borrowing availability under the line of credit |  |  | 90.00% |  |
Revolving loans | Wells Fargo Bank, National Association | Eligible investment grade | Inventories |  |  |  |  |
Debt |  |  |  |  |
Borrowing availability under the line of credit |  |  | 65.00% |  |
Revolving loans | Wells Fargo Bank, National Association | Non-investment grade eligible | Accounts Receivable |  |  |  |  |
Debt |  |  |  |  |
Borrowing availability under the line of credit |  |  | 85.00% |  |
Revolving loans | Wells Fargo Bank, National Association | KeyBank National Association |  |  |  |  |
Debt |  |  |  |  |
Repayments of Long-term Debt | $ 8,745,000 |  |  |  |
Revolving loans | Wells Fargo Bank, National Association | Libor Rate |  |  |  |  |
Debt |  |  |  |  |
Line of Credit Facility, Interest Rate Description |  |  | LIBOR rate means the greater of (a) 0.75% per annum and (b) the per annum published LIBOR rate for interest periods of one, three or six months as chosen by the Company. |  |
Debt Instrument, Description of Variable Rate Basis |  |  | LIBOR |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.00% |  |
Revolving loans | Wells Fargo Bank, National Association | Libor Rate | Minimum |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.00% |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 0.75% |  |
Revolving loans | Wells Fargo Bank, National Association | Libor Rate | Maximum |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.50% |  |
Revolving loans | Wells Fargo Bank, National Association | Base Rate |  |  |  |  |
Debt |  |  |  |  |
Line of Credit Facility, Interest Rate Description |  |  | Base rate is the greater of (a) 1.0% per annum, (b) the Federal Funds Rate plus 0.5%, (c) LIBOR Rate plus 100 basis and (d) prime rate. |  |
Debt Instrument, Description of Variable Rate Basis |  |  | base rate |  |
Revolving loans | Wells Fargo Bank, National Association | Base Rate | Minimum |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.00% |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 1.00% |  |
Revolving loans | Wells Fargo Bank, National Association | Base Rate | Maximum |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.50% |  |
Revolving loans | Wells Fargo Bank, National Association | Federal Funds Rate |  |  |  |  |
Debt |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 0.50% |  |
Revolving loans | Incremental revolving commitment |  |  |  |  |
Debt |  |  |  |  |
Maximum borrowing capacity |  |  | $ 10,000,000 |  |

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