Note 11 - Share-Based Compensation (Details) - Stock Option Activity (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
Note 11 - Share-Based Compensation (Details) - Stock Option Activity [Line Items]
Options outstanding as of December 28, 2013 (in Shares)	276,900
Options outstanding as of December 28, 2013	$ 5.47
Options granted (in Shares)	15,000	5,000
Options granted	$ 6.10
Options exercised (in Shares)	(58,000)
Options exercised	$ 4.59
Options forfeited/cancelled (in Shares)	(11,000)
Options forfeited/cancelled	$ 8.81
Options outstanding as of September 27, 2014 (in Shares)	222,900
Options outstanding as of September 27, 2014	$ 5.57
Options exercisable as of September 27, 2014 (in Shares)	152,900
Options exercisable as of September 27, 2014	$ 5.53
Intrinsic value of outstanding stock options as of September 27, 2014 (in Dollars)	$ 476
Intrinsic value of stock options exercised for the thirty-nine week period ended September 27, 2014 (in Dollars)	$ 112
Minimum [Member]
Note 11 - Share-Based Compensation (Details) - Stock Option Activity [Line Items]
Options outstanding price range at September 27, 2014	$ 4.16
Maximum [Member]
Note 11 - Share-Based Compensation (Details) - Stock Option Activity [Line Items]
Options outstanding price range at September 27, 2014	$ 9.81