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Preferred Stock (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Sep. 29, 2017
shares
Jul. 15, 2014
USD ($)
shares
May 12, 2014
USD ($)
shares
Apr. 30, 2014
$ / shares
shares
Dec. 31, 2017
USD ($)
Sep. 30, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Schedule of Capitalization, Equity [Line Items]              
Aggregate value          
Share conversion, original shares converted | shares 480,000            
Reverse stock split ratio           0.1818  
Non-Cumulative Convertible Perpetual Preferred Stock Series B [Member] | Private Placement [Member]              
Schedule of Capitalization, Equity [Line Items]              
Preferred stock rate       6.25%      
Price per share | $ / shares       $ 25.00      
Series B Preferred Stock [Member]              
Schedule of Capitalization, Equity [Line Items]              
Preferred Stock Shares Issued | shares           0 0
Stock conversion, estimated preferred stock dividends eliminated quarterly         $ 187,500    
Stock conversion, estimated preferred stock dividends eliminated annually         $ (750,000)    
Series B Preferred Stock [Member] | Private Placement [Member]              
Schedule of Capitalization, Equity [Line Items]              
Preferred Stock Shares Issued | shares   480,000 480,000 480,000   480,000  
Aggregate value   $ 12,000,000 $ 12,000,000        
Expenses for issuance of stock   482,000 482,000        
Other offering expenses   149,000 149,000        
Proceeds from Issuance of Private Placement   $ 11,369,000 $ 11,369,000        
Common Stock              
Schedule of Capitalization, Equity [Line Items]              
Shares post-reverse-split | shares 1,246,753