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Note 12 - Treasury Stock Transactions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	6 Months Ended
	Jun. 02, 2020	Jun. 27, 2020	Jun. 27, 2020	Jun. 29, 2019
Treasury Stock, Shares, Acquired (in shares)	1,858,139
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)	$ 1.20
Treasury Stock, Value, Acquired, Cost Method	$ 2,200	$ 2,230
Notes Issued			$ 2,230
Stock Repurchase Program, 2016 [Member]
Treasury Stock, Shares, Acquired (in shares)				0
Note Issued to Acquire Treasury Stock [Member]
Notes Issued	$ 2,200
Debt Instrument, Interest Rate, Stated Percentage	9.00%
Debt Instrument, Maturity Date	Aug. 10, 2023