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Debt and Line of Credit (Details) |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 29, 2021 USD ($) | Oct. 30, 2018 USD ($) covenant | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | May 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term debt |  |  |  | $ 0 | $ 6,927,000 |
PPP loan forgiveness |  |  | $ 6,979,000 | 6,979,000 | 0 |
PPP Loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term debt |  |  |  | 0 | $ 6,927,000 | $ 6,927,000
Senior Credit Facility | Line of Credit | 2018 term notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Term of debt instrument |  | 3 years |  |  |  |
Senior Credit Facility | Line of Credit | Revolving loan agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 15,000 | $ 20,000,000 |  | 15,000,000 |  |
Remaining balance available for borrowing |  |  |  | $ 10,900,000 |  |
Number of financial covenants | covenant |  | 2 |  |  |  |
Consolidated fixed charge coverage ratio |  | 1.25 |  |  |  |
Minimum trailing four quarter consolidated adjusted EBITDA | $ 3,000,000 |  |  |  |  |
Debt Covenant Period, One | Senior Credit Facility | Line of Credit | Revolving loan agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Consolidated leverage ratio |  | 2.50 |  |  |  |
Debt Covenant Period, Two | Senior Credit Facility | Line of Credit | Revolving loan agreement |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Consolidated leverage ratio |  | 2.00 |  |  |  |

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- Definition Line of Credit Facility, Covenant Compliance, Minimum Trailing Four Quarter Consolidated Adjusted EBITDA + References No definition available. + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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