Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 31, 2022	Jan. 01, 2022
Net of allowance for credit losses	$ 77	$ 54	$ 53
Common Stock, Par Value (in dollars per share)	$ 0.25	$ 0.25	$ 0.25