Note 4 - Accounts Receivable, Transit Accounts Receivable and Transit Accounts Payable (Details Textual) - Total Accounts Receivable and Transit Accounts Receivable [Member] - USD ($) $ in Millions	Apr. 01, 2023	Dec. 31, 2022	Jan. 01, 2022
Accounts Receivable, before Allowance for Credit Loss, Current	$ 4.5
Accounts Payable, Current	12.5
Accounts Payable, Net	$ 8.0	$ 6.5	$ 1.1