Note 12 - Treasury Stock Transactions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Sep. 25, 2020	Jun. 02, 2020	Jan. 02, 2021	Dec. 28, 2019	Jan. 13, 2021
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
Repayments of Subordinated Debt, Total			$ 2,230
Subsequent Event [Member] | Maximum [Member]
Stock Repurchase Program, Authorized Amount					$ 7,500
Note Issued to Acquire Treasury Stock [Member]
Notes Issued		$ 2,200
Debt Instrument, Interest Rate, Stated Percentage		9.00%
Repayments of Subordinated Debt, Total	$ 2,200
Debt Instrument, Maturity Date		Aug. 10, 2023