Note 1 - Summary of Significant Accounting Policies - Amortization Expense Classification (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Capitalized contract cost	$ 1,342	$ 1,771	$ 2,651
Direct Expenses [Member]
Capitalized contract cost	181	146	157
Selling, General and Administrative Expenses [Member]
Capitalized contract cost	$ 1,161	$ 1,625	$ 2,494