Note 4 - Accounts Receivable, Transit Accounts Receivable and Transit Accounts Payable (Details Textual) - Transit Accounts Receivable [Member] - USD ($) $ in Millions	Apr. 02, 2022	Jan. 01, 2022
Accounts Receivable, before Allowance for Credit Loss, Current	$ 1.1	$ 1.0
Accounts Payable, Current, Total	2.7	2.1
Accounts Payable, Net	$ 1.6	$ 1.1