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Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 2 Months Ended
Jul. 15, 2014
May. 12, 2014
Apr. 30, 2014
Jul. 15, 2014
Jun. 30, 2015
Dec. 31, 2014
Schedule of Capitalization, Equity [Line Items]            
Aggregate value         $ 5 $ 5
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     $ 25.00      
Series B Preferred Stock [Member]            
Schedule of Capitalization, Equity [Line Items]            
Preferred Stock Shares Issued         480,000 480,000
Series B Preferred Stock [Member] | Private Placement [Member]            
Schedule of Capitalization, Equity [Line Items]            
Preferred Stock Shares Issued 480,000 480,000   480,000 480,000  
Aggregate value $ 12,000 $ 12,000   $ 12,000    
Expenses for issuance of stock 482 482        
Other offering expenses $ 149 $ 149        
Proceeds from Issuance of Private Placement       $ 11,369    
Minimum [Member] | Series B Preferred Stock [Member] | Private Placement [Member]            
Schedule of Capitalization, Equity [Line Items]            
Warrant number of common stock shares purchased         3.25  
Warrant, value         $ 700  
Warrant, shares         28,000  
Maximum [Member] | Series B Preferred Stock [Member] | Private Placement [Member]            
Schedule of Capitalization, Equity [Line Items]            
Warrant number of common stock shares purchased         2.00  
Warrant, value         $ 700  
Warrant, shares         28,000