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Stock-Based Compensation (Detail Textuals) - Unrestricted Stock Grants - 2001 Nonqualified Stock Plan - Directors, officers and employees - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 28, 2016
Jan. 31, 2016
Jul. 31, 2015
Mar. 31, 2015
Mar. 31, 2016
Dec. 31, 2015
2015 Grant            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares granted (in shares)       152,000    
Stock-based compensation expense           $ 682,000
Number of shares issued (in shares)   57,151 58,862      
Number of common stock shares surrendered by employees withholding taxes   18,849 17,138      
Common stock value surrendered by employees withholding taxes   $ 61,000 $ 69,000      
2016 Grant            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares granted (in shares) 152,000          
Stock-based compensation expense         $ 558,000  
Stock based compensation expense charged         8,000  
Remaining stock based compensation expense         $ 550,000