Note 5 - Stock-based Compensation (Details Textual) - USD ($)	3 Months Ended	15 Months Ended
Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017
Common Stock, Capital Shares Reserved for Future Issuance	677,000		677,000
Allocated Share-based Compensation Expense	$ 142,000	$ 161,000
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	58,000		$ 58,000
Proceeds from Stock Options Exercised	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		45,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	447,000		$ 447,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			297 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	58,000		$ 58,000
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	$ 22,000	42,000
Payments Related to Tax Withholding for Share-based Compensation		$ 20,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 39 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years	2 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 139,000		$ 139,000
Restricted Stock [Member] \| Non Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years
Performance Shares [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate number of common shares reserved for future issuance.

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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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