Note 1 - Summary of Significant Accounting Policies (Details Textual)	1 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax		$ (0)	$ (2,569,000)	$ (0)
Incremental Costs of Obtaining a Contract, Deferred During Period		395,000	454,000	1,900,000
Capitalized Contract Cost, Net, Noncurrent		1,453,000	2,441,000
Capitalized Contract Cost, Impairment Loss		41,000	14,000	31,000
Capitalized Computer Software, Additions		4,300,000	3,600,000	2,800,000
Asset Impairment Charges, Total		0	0	0
Impairment of Intangible Assets (Excluding Goodwill), Total		0	0	0
Goodwill, Impairment Loss		$ 0	$ 0	$ 0
Number of Operating Segments	1	1	1	1	6
Number of Reporting Units	1
Income Tax Credits and Adjustments		$ 2,000	$ 36,000	$ 10,000
Cash Equivalents, at Carrying Value, Total		6,500,000	24,900,000
Operating Lease, Impairment Loss				324,000
Excess Loss Coverage Per Person		150,000
Claims Loss Coverage, Minimum Aggregate Deductible		5,400,000	4,700,000	$ 3,200,000
Self Insurance Reserve, Current		$ 449,000	$ 424,000
Common Class A [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares		263,909	315,764	127,185
Minimum [Member]
Capitalized Contract Cost, Amortization Period (Year)		3 years
Minimum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life (Year)		2 years
Minimum [Member] | Computer Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years
Minimum [Member] | Software and Software Development Costs [Member]
Property, Plant and Equipment, Useful Life (Year)		1 year
Minimum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)		7 years
Maximum [Member]
Capitalized Contract Cost, Amortization Period (Year)		5 years
Maximum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life (Year)		10 years
Maximum [Member] | Computer Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)		5 years
Maximum [Member] | Software and Software Development Costs [Member]
Property, Plant and Equipment, Useful Life (Year)		5 years
Maximum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)		40 years