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Note 7 - Line of Credit and Long-term Debt (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Oct. 01, 2021 | Dec. 31, 2020
Long-term Debt, Gross | $ 7,246 |  | $ 1,269
Line of Credit [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 5,000 |  |
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 5.50% |  |
Notes Payable [Member] |  |  |
Long-term Debt, Gross | $ 4,400 |  |
Notes Payable [Member] | Advantage Term Note 1 [Member] |  |  |
Debt Instrument, Face Amount |  | $ 1,400 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.00% |
Notes Payable [Member] | Advantage Term Note 2 [Member] |  |  |
Debt Instrument, Face Amount |  | $ 1,400 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.00% |
Notes Payable [Member] | Enhanced Term Note [Member] |  |  |
Debt Instrument, Face Amount |  | $ 1,800 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.00% |
Notes Payable [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 6.50% |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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