Annual report pursuant to Section 13 and 15(d)

Capital Stock - Rights Offering 2018 (Details)

v3.20.4
Capital Stock - Rights Offering 2018 (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Nov. 19, 2018
Sale of stock          
Stock issuance costs   $ 1,945 $ 388    
Preferred stock, stated value (in dollars per share)   $ 0.05 $ 0.05    
Common Stock          
Sale of stock          
Total number of shares issued     1,000,000    
2018 Rights Offering          
Sale of stock          
Rights offering amount         $ 20,000
Aggregate gross proceeds from issuance of common stock and preferred stock $ 20,000        
Stock issuance costs 300        
Net proceeds from issuance of stock $ 19,700        
Percentage of convertible preferred stock conversion blocker provision     19.99%    
Notice term of conversion blocker     61 days    
2018 Rights Offering | Series Y Convertible Preferred Stock          
Sale of stock          
Total number of shares issued 1,252.772     1,252.772  
Preferred stock, stated value (in dollars per share) $ 13,000     $ 13,000  
Number of shares issued for each share of convertible preferred stock that is converted 1,000     1,000  
Preferred stock conversion price per share $ 13.00     $ 13.00  
Total number of shares of common stock issuable upon conversion 1,252,772     1,252,772  
Percentage of convertible preferred stock conversion blocker provision 19.99%        
2018 Rights Offering | Common Stock          
Sale of stock          
Total number of shares issued 285,689