Quarterly report pursuant to Section 13 or 15(d)

Redeemable Series E Convertible Preferred Stock (Details)

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Redeemable Series E Convertible Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands
5 Months Ended 7 Months Ended 9 Months Ended
May 13, 2019
May 10, 2019
May 06, 2019
Sep. 30, 2019
May 06, 2019
Sep. 30, 2019
Dec. 12, 2018
Redeemable Preferred Stock [Abstract]              
Share price (in dollars per share)             $ 1.95
Number [Abstract]              
Issued (in shares)       2,633,678 2,846,356    
Converted to common stock (in shares)       (925,758) (212,678)    
Balance (in shares)     2,633,678 1,707,920 2,633,678 1,707,920  
Balance (in shares)     2,633,678   2,633,678    
Amount [Abstract]              
Outstanding       $ 20,059      
Issued         $ 2,023    
Converted to Common Stock       (7,052) (152)    
Balance     $ 1,871   1,871    
Purchase price adjustment     18,188        
Balance     $ 20,059 $ 13,007 $ 20,059 $ 13,007  
Series E Convertible Preferred Stock [Member]              
Redeemable Preferred Stock [Abstract]              
Preferred stock, shares designated (in shares)       2,900,000   2,900,000  
Preferred stock, stated value (in dollars per share)       $ 0.99   $ 0.99  
Preferred stock, conversion price (in dollars per share)       $ 0.78   $ 0.78  
Share price (in dollars per share)     $ 6.00   $ 6.00    
Number of common stock, shares issued upon conversion of preferred stock (in shares) 300,000 875,000          
Number [Abstract]              
Converted to common stock (in shares) (236,364) (689,394)          
Dividends [Abstract]              
Preferred stock, dividend rate           10.00%  
Accrued dividend       $ 200   $ 200  
Redemption [Abstract]              
Preferred stock, mandatory redemption price in percentage of stated value       125.00%   125.00%  
Preferred stock, mandatory redemption price (in dollars per share)       $ 1.23   $ 1.23  
Series E Convertible Preferred Stock [Member] | Common Stock [Member]              
Redemption [Abstract]              
Preferred stock, mandatory redemption price in percentage of market price       75.00%   75.00%