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Stock-Based Compensation (Detail Textuals)
1 Months Ended 3 Months Ended 9 Months Ended
Jul. 02, 2018
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Mar. 20, 2018
Installment
shares
Jul. 31, 2017
USD ($)
shares
Feb. 28, 2017
USD ($)
Installment
shares
Jan. 31, 2017
USD ($)
shares
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock-based compensation expense | $             $ 186,000 $ 198,000 $ 394,000 $ 465,000
2001 Nonqualified Stock Plan | Unrestricted Stock | 2018 Grant | Directors, officers and employees                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares granted (in shares) | shares     138,000              
Number of installment | Installment     2              
Stock-based compensation expense | $                 580,000  
Stock based compensation expense charged | $             $ 186,000   $ 394,000  
Number of shares issued (in shares) | shares 57,592                  
Number of common stock shares surrendered by employees withholding taxes | shares 11,408                  
Common stock value surrendered by employees withholding taxes | $ $ 51,000                  
2001 Nonqualified Stock Plan | Unrestricted Stock | 2018 Grant | Directors, officers and employees | Subsequent Event                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares granted (in shares) | shares   69,000                
Remaining stock based compensation expense | $   $ 186,000                
2001 Nonqualified Stock Plan | Unrestricted Stock | 2017 Grant | Directors, officers and employees                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of shares granted (in shares) | shares         134,000          
Number of installment | Installment         2          
Stock-based compensation expense | $         $ 663,000          
Number of shares issued (in shares) | shares       54,014   53,378        
Number of common stock shares surrendered by employees withholding taxes | shares       12,986   13,622        
Common stock value surrendered by employees withholding taxes | $       $ 67,000   $ 64,000