| Note 8 - Stock-based Compensation | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Notes to Financial Statements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-based Payment Arrangement [Text Block] | Note  8 –  Stoc k-based Compensation The Company has  twoincentive stock plans, the 2006Omnibus Incentive Plan (the “2006Plan”) and the 2014Omnibus Equity Compensation Plan (the “2014Plan”). As a result of the approval of the 2014Plan by the Company’s stockholders at the Company’s 2014annual meeting, grants  may  nolonger be issued under the 2006Plan. The Company believes that awards of long-term, equity-based incentive compensation will attract and retain directors, officers and employees of the Company and will encourage these individuals to contribute to the successful performance of the Company, which will lead to the achievement of the Company’s overall goal of increasing stockholder value. Awards granted under the  2014Plan  may be in the form of incentive stock options, non-qualified stock options, shares of restricted or unrestricted stock, stock units, stock appreciation rights, or other stock-based awards. Awards  may be granted subject to the achievement of performance goals or other conditions, and certain awards  may be payable in stock or cash, or a combination of the two. The 2014Plan is administered by the Compensation Committee of the Board, which selects eligible employees, non-employee directors and other individuals to participate in the 2014Plan and determines the type, amount, duration (such duration notto exceed a term of ten( 10) years for grants of options) and other terms of individual awards. At  March 29, 2020,  440,000shares of the Company’s common stock were available for future issuance under the 2014Plan, which  may be issued from authorized and unissued shares of the Company’s common stock or treasury shares. Stock-based compensation is calculated according to FASB ASC Topic  718, Compensation – Stock Compensation, which requires stock-based compensation to be accounted for using a fair-value-based measurement. During fiscal years 2020and 2019,the Company recorded $297,000and $377,000of stock-based compensation, respectively. The Company records the compensation expense associated with stock-based awards granted to individuals in the same expense classifications as the cash compensation paid to those same individuals. Nostock-based compensation costs were capitalized as part of the cost of an asset as of  March 29, 2020. St ock Options: The following table represents stock option activity for fiscal years 2020and 2019: 
 As of   March 29, 2020,  noneof the outstanding or exercisable stock options held any intrinsic value. The Company did notreceive any cash from the exercise of stock options during fiscal year 2020.Upon the exercise of stock options, participants  may choose to surrender to the Company those shares from the option exercise necessary to satisfy the exercise amount and their income tax withholding obligations that arise from the option exercise. The effect on the cash flow of the Company from these “cashless” option exercises is that the Company remits cash on behalf of the participant to satisfy his or her income tax withholding obligations. The Company used cash to remit the required income tax withholding amounts from “cashless” option exercises of $3,000during fiscal year 2020.There were nostock options exercised during fiscal year 2019.As of  March 31, 2019, the intrinsic value of the outstanding and exercisable stock options was each $2,000. To determine the estimated fair value of stock options granted, the Company uses the Black-Scholes-Merton valuation formula, which is a closed-form model that uses an equation to estimate fair value. The following table sets forth the assumptions used to determine the fair value of the non-qualified stock options awarded to certain employees during fiscal years  2020and 2019,which options vest over a two 
 For the fiscal years ended   March 29, 2020 and  March 31, 2019, the Company recognized compensation expense associated with stock options as follows (in thousands): 
 
 A summary of stock options outstanding and exercisable as of   March 29, 2020 is as follows: 
 As of   March 29, 2020, total unrecognized stock-option compensation costs amounted to $37,000,which will be recognized as the underlying stock options vest over a weighted-average period of 6.9months. The amount of future stock-option compensation expense could be affected by any future stock option grants and by the separation from the Company of any employee or director who has stock options that are unvested as of such individual’s separation date. Non-vested  Stock  Granted to Non-Employee Directors : 
 These shares vest over a  two-year period, assuming continued service. The fair value of non-vested stock granted to the Company’s non-employee directors was based on the closing price of the Company’s common stock on the date of each grant. In each of  August 2019 and 2018, 28,000 $135,000and $151,000,respectively. Non-vested Stock Granted to Employees:  January 18, 2019, upon the appointment of Donna Sheridan to serve as the President and Chief Executive Officer of NoJo, the Board granted 25,000shares of non-vested stock to Ms. Sheridan. These shares will vest on  January 18, 2021, assuming continued service. The fair value of the non-vested stock granted to Ms. Sheridan is $5.86per share, which was based on the closing price of the Company’s common stock on the date of the grant. Performance Bonus Plan:  may instead be awarded cash, if and to the extent that an insufficient number of shares of common stock are available for issuance from all shareholder-approved, equity-based plans or programs of the Company in effect. The performance bonus plan also imposes individual limits on awards and provides that shares of common stock that  may be awarded will vest over a two-year period. Thus, compensation expense associated with performance bonus plan awards are recognized over a three-year period – the fiscal year in which the award is earned, plus the two-year vesting period. No 2020or 2019in connection with the performance bonus plan. The Company recorded compensation expense during fiscal year 2019of $116,000related to shares granted in fiscal year 2018that were earned in fiscal year 2017. The table below sets forth the vesting of shares granted under the performance bonus plan, as well as the number of shares surrendered to the Company to satisfy the income tax withholding obligations that arose from the vesting of the shares and the taxes remitted to the appropriate taxing authorities on behalf of such individuals. 
 For the fiscal years ended   March 29, 2020 and  March 31, 2019, the Company recognized compensation expense associated with non-vested stock grants, which is included in marketing and administrative expenses in the accompanying consolidated statements of income, as follows (in thousands): 
 
 As of   March 29, 2020, total unrecognized compensation expense related to the Company’s non-vested stock grants was $246,000,which will be recognized over the remaining portion of the respective vesting periods associated with each block of grants, such grants having a weighted average vesting term of 9.3months. The amount of future compensation expense related to non-vested stock grants could be affected by any future non-vested stock grants and by the separation from the Company of any individual who has unvested grants as of such individual’s separation date. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||