Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jul. 15, 2024
Reclassification of cumulative foreign currency translation into earnings	$ 0	$ 0	$ 2,569,000
Incremental Costs of Obtaining a Contract, Deferred During Period	1,200,000	395,000	454,000
Capitalized Contract Cost, Net, Noncurrent	1,562,000	1,453,000
Capitalized Contract Cost, Impairment Loss	57,000	41,000	14,000
Capitalized Computer Software, Additions	3,700,000	4,300,000	3,600,000
Asset Impairment Charges	0	0	0
Impairment of Intangible Assets (Excluding Goodwill)	0	0	0
Goodwill, Impairment Loss	0	0	0
Income Tax Credits and Adjustments	10,000	2,000	36,000
Cash Equivalents, at Carrying Value	4,200,000	6,500,000
Operating Lease, Impairment Loss	0	0	0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	83,000	0	0
Excess Loss Coverage Per Person	150,000
Claims Loss Coverage, Minimum Aggregate Deductible	5,500,000	5,400,000	$ 4,700,000
Self Insurance Reserve, Current	$ 364,000	$ 449,000
Common Class A [Member]
Stock Options Excluded from Computation of Earnings Per Share, Amount	401,489	263,909	315,764
Nobl Inc [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 1,000,000			$ 1,000,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	83,000
Business Combination, Contingent Consideration, Liability	$ 859,000			$ 776,000
Minimum [Member]
Capitalized Contract Cost, Amortization Period	3 years
Minimum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life	2 years
Minimum [Member] | Computer Equipment [Member]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Software and Software Development Costs [Member]
Property, Plant and Equipment, Useful Life	1 year
Minimum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life	7 years
Maximum [Member]
Capitalized Contract Cost, Amortization Period	5 years
Maximum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] | Computer Equipment [Member]
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | Software and Software Development Costs [Member]
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life	40 years