Quarterly report pursuant to Section 13 or 15(d)

Debt - Convertible Debt (Details)

v3.21.1
Debt - Convertible Debt (Details)
3 Months Ended
Aug. 12, 2019
USD ($)
$ / shares
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Apr. 29, 2020
USD ($)
Jun. 29, 2015
Debt Instrument [Line Items]            
Loss on extinguishment of debt   $ (861,814) $ 0      
Convertible Debt            
Debt Instrument [Line Items]            
Interest expense   $ 1,898,284 1,965,124      
Convertible Debt | 7.00% Convertible Senior Notes            
Debt Instrument [Line Items]            
Interest rate   7.00%   7.00%   7.00%
Interest expense   $ 0 35,482      
Discount amortization   0 3,645      
Deferred debt issuance amortization   0 622      
Convertible Debt | 5.875% Convertible Notes            
Debt Instrument [Line Items]            
Face amount $ 120,000,000.0 $ 120,000,000        
Interest rate 5.875% 5.875%   5.875%    
Conversion price (in dollars per share) | $ / shares $ 50.00          
Interest expense   $ 1,898,284 1,929,642      
Discount amortization   143,607 145,980      
Deferred debt issuance amortization   20,818 $ 21,162      
Convertible debt outstanding   118,100,000        
Redemption price in percentage 100.00%          
Unamortized discount on 5.875% Convertible Senior Notes $ 3,500,000 $ 2,513,132   $ 2,656,739    
Debt issuance costs, gross 508,000          
Effective interest rate in percentage   6.40% 6.40%      
Minimum balance to trigger default upon qualified event $ 25,000,000.0          
Debt instrument, repurchased face amount         $ 2,000,000.0  
Conversion ratio   0.0200000