Note 11 - Share-Based Compensation (Details) - Stock Option Activity (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013
Stock Option Activity [Abstract]
Options outstanding beginning balance, shares (in Shares)	276,900	307,400
Options outstanding beginning balance, weighted average exercise price	$ 5.47	$ 5.34
Options granted, shares (in Shares)	15,000	5,000
Options granted, weighted average exercise price	$ 6.10	$ 5.78
Options exercised, net, shares (in Shares)	(185,836)	(27,500)
Options exercised, net, weighted average exercise price	$ 4.84	$ 4.15
Options forfeited/cancelled, shares (in Shares)	(11,000)	(8,000)
Options forfeited/cancelled, weighted average exercise price	$ 8.81	$ 5.16
Options outstanding ending balance, shares (in Shares)	53,000	276,900
Options outstanding ending balance, weighted average exercise price	$ 7.65	$ 5.47
Options exercisable, shares (in Shares)	30,500	221,900
Options exercisable, weighted average exercise price	$ 8.88	$ 5.45
Intrinsic value of outstanding stock options (in Dollars)	$ 33	$ 504
Intrinsic value of stock options exercised in fiscal year (in Dollars)	$ 640	$ 44
Weighted average grant date fair value of stock options issued during fiscal year	$ 2.33	$ 2.94
Options forfeited in cashless exercises (in Shares)	(42,064)
Options forfeited in cashless exercises	$ 4.84