Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Accounts Receivable, after Allowance for Credit Loss, Current, Total	$ 50,767	$ 59,760
Assets, Current, Total	57,244	70,657
Liabilities, Current, Total	50,575	$ 21,408
Excess of Current Liabilities Including Revolving Line of Credit over Current Assets	6,700
Current Asses Excluding Prepaid Assets	53,300
Excess of Current Assets Excluding Prepaid Assets over Current Liabilities	2,700
Current Liabilities Excluding Line of Credit	17,800
Excess of Current Assets over Current Liabilities Excluding Revolving Line of Credit	$ 39,500