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Note 4 - Line of Credit (Details Textual) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Jul. 31, 2019 USD ($)
Line of Credit Facility, Interest Rate at Period End |  | 1.35% |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  | 0.25% |
Line of Credit, Fixed Coverage Ratio |  | 1.25 |
Line of Credit, Leverage Ratio |  | 3.00% |
Line of Credit Facility, Remaining Borrowing Capacity |  | $ 19,200,000 |
Line of Credit Facility, Reserved for Specific Restriction |  | 100,000 |
Long-Term Debt, Maturity, Year One |  | 210,000 |
Long-Term Debt, Maturity, after Year Five |  | 2,000,000.0 |
Proceeds from Issuance of Debt |  | 3,200,000 |
Long-Term Debt, Maturity, Year Two |  | 210,000 |
Long-Term Debt, Maturity, Year Three |  | 210,000 |
Long-Term Debt, Maturity, Year Four |  | 210,000 |
Obligations to Workers' Compensation Insurance Carrier [Member] |  |  |
Letters of Credit Outstanding, Amount |  | 14,300,000 |
Paycard Funding Account [Member] |  |  |
Letters of Credit Outstanding, Amount |  | $ 500,000 |
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.25% |
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.75% |
Base Rate [Member] | Minimum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 0.25% |
Base Rate [Member] | Maximum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 0.75% |
Term Loan [Member] |  |  |
Debt Instrument, Face Amount | $ 3,200,000 |  |
Debt Instrument, Interest Rate, Effective Percentage |  | 2.10% |
Debt Instrument, Term (Year) |  | 15 years |
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.00% |  |
Truist [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 60,000,000 |  | $ 30,000,000
Truist [Member] | Obligations to Workers' Compensation Insurance Carrier [Member] |  |  |
Letters of Credit Outstanding, Amount |  | $ 14,300,000 |
Letter of Credit [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 20,000,000 |  |

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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
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