Note 12 - Treasury Stock Transactions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Sep. 29, 2020	Sep. 25, 2020	Jun. 02, 2020	Jan. 01, 2022	Jan. 02, 2021	Nov. 12, 2021	Jan. 13, 2021
Treasury Stock, Shares, Acquired (in shares)			1,858,139	1,930,911
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)			$ 1.20	$ 4.68
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 10,100
Treasury Stock, Value, Acquired, Cost Method			$ 2,200	$ 9,043	$ 2,230
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
Repayments of Subordinated Debt, Total	$ 2,200	$ 2,200
Maximum [Member]
Stock Repurchase Program, Authorized Amount						$ 19,100	$ 7,500