Note 9 - Preferred Stock (Details)	12 Months Ended
	Jan. 03, 2016 $ / shares shares	Dec. 28, 2014 shares
Note 9 - Preferred Stock (Details) [Line Items]
Preferred Stock, Shares Authorized | shares	5,000,000
Preferred Stock, Par or Stated Value Per Share	$ 1.00
Preferred Stock, Shares Issued | shares	0	0
Number of Purchase Rights	1
Percentage of Acquisition of Outstanding Common Stock Causing Dilution	15.00%
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 90
Minimum Preferential Dividend per Share	$ 1.00
Dividend Declared Rate Over per Common Stock	100
Preferred Stock, Liquidation Preference Per Share	$ 1.00
Series B Preferred Stock [Member]
Note 9 - Preferred Stock (Details) [Line Items]
Number of Votes per share Entitled to Preferred Stock Holders	100