Quarterly report pursuant to Section 13 or 15(d)

Capital Stock, Stock Plans and Stock-Based Compensation (Details Narrative)

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Capital Stock, Stock Plans and Stock-Based Compensation (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
May 01, 2018
Jan. 18, 2018
Jan. 13, 2017
Jan. 13, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Non-qualified stock options, shares, granted             6,000 6,000
Stock options, grants in period, exercise price             $ 4.05 $ 3.79
Unrecognized compensation cost related to unvested options         $ 503,000   $ 503,000  
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, remainder of fiscal year         75,000   75,000  
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year two         126,000   126,000  
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year three         114,000   114,000  
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year four         114,000   114,000  
Employee and director service share-based compensation nonvested awards, compensation not yet recognized, stock options, year five         74,000   74,000  
Allocated share-based compensation expense         45,000 $ 19,000 $ 91,000 $ 41,000
Exercised option to purchase of common stock             10,000
Exercised option price per share             $ 3.65
Employee Stock Options [Member]                
Allocated share-based compensation expense         $ 37,000 $ 11,000 $ 73,000 $ 21,000
2003 Outside Directors Stock Plan [Member]                
Stock issued during period, shares, issued for services             31,567  
Allocated share-based compensation expense             $ 130,000  
2003 Outside Directors Stock Plan [Member] | New Director [Member]                
Non-qualified stock options, shares, granted   6,000 6,000          
Stock options granted contractual term   10 years 10 years          
Stock options, grants in period, exercise price   $ 4.05 $ 3.79          
2003 Outside Directors Stock Plan [Member] | New Director [Member] | Employee Stock Options [Member]                
Stock options granted vesting period   6 months   6 months        
2017 Stock Option Plan [Member] | Robert Ferguson [Member]                
Exercised option to purchase of common stock 10,000              
Exercised option price per share $ 3.65              
Proceeds from stock option exercised $ 36,500