Note 6 - Stock-based Compensation  | 
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| Notes to Financial Statements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | 
 N 
ote  
6  – S 
tock-based Compensation 
T  he Company has  
two  incentive stock plans, the 2006  Omnibus Incentive Plan (the “2006  Plan”) and the 2014  Omnibus Equity Compensation Plan (the “2014  Plan”). As a result of the approval of the 2014  Plan by the Company’s stockholders at the Company’s 2014  annual meeting, grants  may  
no  longer be issued under the 2006  Plan.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  
2014  Plan  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 2014  Plan is administered by the Compensation Committee of the Company’s Board of Directors (the “Board”), which selects eligible employees, non-employee directors and other individuals to participate in the 2014  Plan and determines the type, amount, duration and other terms of individual awards. Grants under the 2014  Plan are settled primarily through the issuance of new shares of the Company’s common stock, 667,000  shares of which were available for future issuance under the 2014  Plan as of  October 1, 2017. 
Stock-based compensation   expense is calculated according to FASB ASC Topic  
718,  Compensation – Stock Compensation , which requires stock-based compensation expense to be accounted for using a fair-value-based measurement. The Company recorded stock-based compensation expense of $135,000  and $146,000  for the three -month periods ended  October 1, 2017  and  October 2, 2016,  respectively, and recorded $277,000  and $307,000  for the six -month periods ended  October 1, 2017  and  October 2, 2016,  respectively. The Company records the compensation expense related to stock-based awards granted to individuals in the same classifications in the accompanying unaudited condensed consolidated statements of income as the cash compensation paid to those same individuals. No  stock-based compensation costs have been capitalized as part of the cost of an asset as of  October 1, 2017. 
Stock Options: 
 The following table represents stock option activity for the  
six -month periods ended  October 1, 2017  and  October 2, 2016: 
 As of   October 1, 2017,  the intrinsic value of the outstanding and exercisable stock options was $56,000  and $37,000,  respectively. There were no  options exercised during the six -month period ended  October 1, 2017.  The intrinsic value of the stock options exercised during the three  and six -month periods ended  October 2, 2016  was $124,000  and $169,000,  respectively. The Company did not three  and six -month periods ended  October 2, 2016.  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” stock 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” stock option exercises of $41,000  and $61,000  during the three  and six -month periods ended  October 2, 2016,  respectively.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 that were awarded to certain employees during fiscal years  2018  and 2017,  which options vest over a two -year period, assuming continued service.
 For   the  
three  and six -month periods ended  October 1, 2017  and  October 2, 2016,  the Company recognized compensation expense associated with stock options as follows (in thousands):
 
 As of   October 1, 2017,  total unrecognized stock option compensation expense amounted to $115,000,  which will be recognized as the underlying stock options vest over a weighted-average period of 11.5  months. 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 individual who has received stock options that are unvested as of such individual’s separation date.Non-vested Stock 
 Granted to Non-Employee Directors:  The Board granted the following shares of non-vested stock to the Company’s non-employee directors:
 These shares vest over a  two -year period, assuming continued service. The fair value of the 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 2017  and 2016,  28,000 $157,000  and $281,000,  respectively.Performance Bonus Plan: 
  The Company maintains a performance bonus plan for certain executive officers that provides for awards of shares of common stock in the event that the aggregate average market value of the common stock during the relevant fiscal year, plus the amount of cash dividends paid in respect of the common stock during such period, increases. 
 These individuals  
 may  instead be awarded cash, if and to the extent that insufficient 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. 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.In connection with the performance bonus plan, the Company   granted shares of common stock and recognized or will recognize compensation expense as set forth below: 
 The table below sets forth the vesting of shares issued in connection with the grants of shares set forth in the above table. Each of the individuals holding shares that vested surrendered to the Company the number of shares necessary to satisfy the income tax withholding obligations that arose from the vesting of the shares. The table below also sets forth the taxes remitted to the appropriate taxing authorities on behalf of such individuals  . 
 For the   three 
 and  
six -month periods ended  October 1, 2017  and  October 2, 2016,  the Company recognized compensation expense associated with stock grants, which is included in marketing and administrative expenses in the accompanying unaudited condensed consolidated statements of income, as follows (in thousands):
 
 As of  
 October 1, 2017,  total unrecognized compensation expense related to the Company’s non-vested stock grants amounted to $487,000,  which will be recognized over the respective vesting terms associated with each block of non-vested stock indicated above, such grants having an aggregate weighted-average vesting term of 11.7  months. The amount of future compensation expense related to the Company’s 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 non-vested stock grants as of such individual’s separation date. | 
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