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Note 10 - Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended			12 Months Ended		13 Months Ended
	Jan. 03, 2011	Mar. 07, 2008	Jan. 29, 2013	Dec. 30, 2011	Dec. 30, 2010	Dec. 31, 2015	Dec. 31, 2014	Jan. 29, 2014	Jun. 02, 2014	Jun. 30, 2004
Note 7 - Shareholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized									1,750,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized for Grants other than Options									800,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	50,000	50,000				4.68	3.94
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number (2004 LTIP)							1,447,219
Share Price (in Dollars per share)	$ 6.58	$ 12.74
Share Based Payment Award, Options, Annual Incremental Vesting	12,500
Share Based Payment Award, Options, Term				5 years
Share-based Compensation (in Dollars)						$ 571	$ 1,003
Share-based compensation relating to options							614
Share-based compensation relating to restricted stock units - CEO							150
Share-based compensation relating to restricted stock units - others							$ 29
Grant date fair value of restricted stock units awarded							$ 3.24
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)						$ 440	$ 381
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition						1 year 256 days	1 year 146 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)						$ 2.32	$ 1.6
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)						$ 364	$ 3
Proceeds from Stock Options Exercised (in Dollars)						538	11
Excess tax benefits from option exercises						287	0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)						$ 49	$ 130
Shares of common stock reserved for issuance under all plans						3,596,719
Long Term Incentive Plan [Member]
Note 7 - Shareholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized										750,000
Contingent Restricted Stock Units [Member] | President And Chief Executive Officer [Member]
Note 7 - Shareholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			120,000
Option Grant 2 [Member]
Note 7 - Shareholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				250,000
Share Price (in Dollars per share)				$ 6.42				$ 5.00
Share Based Payment Award, Options, Annual Incremental Vesting				62,500				30,000
Number of days in period minimum share price requirement			15 days
Number Of Days In Period, Minimum Share Price Requirement, Term			30 days
Option Grant 4 [Member]
Note 7 - Shareholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				200,000
Share Price (in Dollars per share)			$ 5.00		$ 15.00
Share Based Payment Award, Options, Annual Incremental Vesting			30,000	50,000
Minimum Share Price Requirement (in Dollars per share)					$ 15.00
Number of days in period minimum share price requirement			15 days	15 days
Number Of Days In Period, Minimum Share Price Requirement, Term			30 days	30 days
Option Grant 3 [Member]
Note 7 - Shareholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				200,000
Share Price (in Dollars per share)			$ 4.00	$ 10.00
Share Based Payment Award, Options, Annual Incremental Vesting			30,000	50,000
Minimum Share Price Requirement (in Dollars per share)				$ 10.00
Number of days in period minimum share price requirement			15 days	15 days
Number Of Days In Period, Minimum Share Price Requirement, Term			30 days	30 days
Option Grant 1 [Member]
Note 7 - Shareholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross					50,000
Share Price (in Dollars per share)			$ 4.00		$ 6.42
Share Based Payment Award, Options, Annual Incremental Vesting			30,000		12,500
Number of days in period minimum share price requirement								15 days
Number Of Days In Period, Minimum Share Price Requirement, Term								30 days

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