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Note 1 - Overview and Summary of Significant Accounting Policies (Details Textual)					12 Months Ended
	Dec. 06, 2021 USD ($)	Oct. 01, 2021 USD ($)	Mar. 22, 2021 USD ($)	Mar. 01, 2021 USD ($)	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 01, 2021 USD ($)
Number of Offices					217
Number of States in which Entity Operates					36
Entity Number of Employees					73,000
Royalty Fees, Percentage of Payroll					4.50%
Revenue, Percentage of Gross Margin					18.00%
License Fee, Percentage of Gross Margin					9.00%
Financing Receivable, Allowance for Credit Loss, Ending Balance					$ 1,900,000	$ 1,600,000
Debt Issuance Costs, Noncurrent, Net, Total						0	$ 430,000
Impairment of Intangible Assets (Excluding Goodwill), Total					$ 0	$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares					209,000	308,000
Accounts Receivable, Allowance for Credit Loss, Ending Balance					$ 26,000	$ 77,000
Marketing and Advertising Expense, Total					$ 94,000	33,000
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay					4.00%
Defined Contribution Plan, Cost					$ 55,000	$ 23,000
First Three Percent [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match					100.00%
Beyond Three Percent [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match					50.00%
Building [Member]
Property, Plant and Equipment, Estimated Useful Lives					40
Building Improvements [Member]
Property, Plant and Equipment, Estimated Useful Lives					15
Minimum [Member]
Percentage of Sales for Services					6.00%
Finite-Lived Intangible Asset, Useful Life (Year)					7 years
Accounts Receivable Age Dates (Day)					42 days
Minimum [Member] | Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives					5
Minimum [Member] | Franchise [Member]
Percentage of Sales for Services					5.00%
Maximum [Member]
Percentage of Sales for Services					8.00%
Finite-Lived Intangible Asset, Useful Life (Year)					15 years
Accounts Receivable Age Dates (Day)					84 days
Maximum [Member] | Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives					7
Maximum [Member] | Franchise [Member]
Percentage of Sales for Services					8.00%
Link Staffing Acquisition [Member]
Asset Acquisition, Consideration Transferred, Total			$ 11,122,911
License Fee, Percentage of Gross Margin			9.00%
Recruit Media [Member]
Asset Acquisition, Consideration Transferred, Total		$ 4,350,000
Dental Power Staffing [Member]
Asset Acquisition, Consideration Transferred, Total	$ 1,862,029
Snelling Staffing Acquisition [Member]
Business Combination, Consideration Transferred, Total				$ 17,850,627

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