Note 11 - Share Based Compensation (Details) - Information About Stock Options Outstanding (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options Outstanding (in Shares)	276,900	307,400	916,594
Number of Options Vested (in Shares)	221,900
Weighted-Average Remaining Contractual Life, Outstanding	3 years 102 days
Weighted-Average Remaining Contractual Life, Vested	1 year 350 days
Weighted-Average Exercise Price, Outstanding	$ 5.47	$ 5.34	$ 4.24
Weighted-Average Exercise Price, Vested	$ 5.45
Range 1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range of Exercise Price	$ 2.50
Upper Range of Exercise Price	$ 2.50
Number of Options Outstanding (in Shares)	1,000
Number of Options Vested (in Shares)	1,000
Weighted-Average Remaining Contractual Life, Outstanding	5 years 350 days
Weighted-Average Remaining Contractual Life, Vested	5 years 350 days
Weighted-Average Exercise Price, Outstanding	$ 2.50
Weighted-Average Exercise Price, Vested	$ 2.50
Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range of Exercise Price	$ 4.16
Upper Range of Exercise Price	$ 5.78
Number of Options Outstanding (in Shares)	233,400
Number of Options Vested (in Shares)	178,400
Weighted-Average Remaining Contractual Life, Outstanding	3 years 149 days
Weighted-Average Remaining Contractual Life, Vested	1 year 292 days
Weighted-Average Exercise Price, Outstanding	$ 4.82
Weighted-Average Exercise Price, Vested	$ 4.60
Range 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range of Exercise Price	$ 6.44
Upper Range of Exercise Price	$ 9.16
Number of Options Outstanding (in Shares)	17,500
Number of Options Vested (in Shares)	17,500
Weighted-Average Remaining Contractual Life, Outstanding	1 year 21 days
Weighted-Average Remaining Contractual Life, Vested	1 year 21 days
Weighted-Average Exercise Price, Outstanding	$ 8.01
Weighted-Average Exercise Price, Vested	$ 8.01
Range 4 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower Range of Exercise Price	$ 9.81
Upper Range of Exercise Price	$ 9.81
Number of Options Outstanding (in Shares)	25,000
Number of Options Vested (in Shares)	25,000
Weighted-Average Remaining Contractual Life, Outstanding	3 years 200 days
Weighted-Average Remaining Contractual Life, Vested	3 years 200 days
Weighted-Average Exercise Price, Outstanding	$ 9.81
Weighted-Average Exercise Price, Vested	$ 9.81