Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Contract with Customer, Asset, Sales Commission, Noncurrent	$ 34,700	$ 31,700
Capitalized Computer Software, Accumulated Amortization	$ 151,100	127,000
Capitalized Software Development Amortization Period (Year)	3 years
Capitalized Computer Software, Amortization	$ 24,100	22,000	$ 18,900
Impairment of Intangible Assets, Finite-Lived	0	0	0
Impairment, Long-Lived Asset, Held-for-Use	0	0	0
Equity Securities without Readily Determinable Fair Value, Amount	$ 1,500	1,500
Number of Possible Sources of Taxable Income	4
Selling and Marketing Expense [Member]
Advertising Expense	$ 1,900	$ 1,500	$ 1,900
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	18 years
Weighted Average [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	11 years 9 months 18 days