Annual report pursuant to Section 13 and 15(d)

DEBT - Convertible Debt (Details)

v3.22.0.1
DEBT - Convertible Debt (Details)
3 Months Ended 12 Months Ended
Jun. 12, 2020
USD ($)
Apr. 29, 2020
USD ($)
Aug. 15, 2019
USD ($)
shares
Jan. 16, 2019
USD ($)
$ / shares
shares
May 23, 2016
USD ($)
Mar. 31, 2021
USD ($)
shares
Sep. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2021
USD ($)
tradingDay
$ / shares
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
Jun. 22, 2020
USD ($)
Aug. 12, 2019
USD ($)
Jun. 29, 2015
USD ($)
$ / shares
Debt Instrument [Line Items]                              
Deferred debt financing costs, net                 $ 1,275,244 $ 0     $ 132,000    
Repurchases of convertible debt                 0 1,316,250 $ 0        
Gain (loss) on extinguishment of debt                 (861,814) 11,549,968 (33,960,565)        
Deferred debt costs                         $ 32,000,000    
7.00% Convertible Notes                              
Debt Instrument [Line Items]                              
Amortization of debt issuance costs     $ 24,000                        
Convertible Debt                              
Debt Instrument [Line Items]                              
Interest expense                 $ 7,593,138 7,697,403 6,675,037        
Convertible Debt | 7.00% Convertible Notes                              
Debt Instrument [Line Items]                              
Face amount     63,900,000                       $ 115,000,000
Effective interest rate                             7.00%
Conversion ratio                 0.030303            
Conversion price (in dollars per share) | $ / shares                             $ 33.00
Repurchases of convertible debt $ 1,700,000   $ 60,200,000   $ 1,000,000                    
Principal amount           $ 416,000         $ 4,200,000 $ 42,000      
Shares issued (in shares) | shares     703,432     12,605         127,143 1,271      
Common stock, par value (in dollars per share) | $ / shares       $ 0.001                      
Interest expense $ 59,000   $ 733,000           $ 0 63,153 $ 3,696,003        
Gain (loss) on extinguishment of debt             $ (28,900,000)                
Write-off of underwriter's discount     360,000           0 6,682 320,821        
Amortization of debt issuance costs                 0 $ 1,140 21,004        
Debt conversion, exchanged instrument, amount     $ 93,200,000                        
Convertible debt outstanding                     $ 2,100,000        
Effective percentage                     7.70%        
Convertible Debt | 7.00% Convertible Notes | Three Shareholders                              
Debt Instrument [Line Items]                              
Repurchases of convertible debt       $ 19,800,000                      
Principal amount       $ 43,800,000                      
Shares issued (in shares) | shares       837,040                      
Interest expense       $ 315,000                      
Gain (loss) on extinguishment of debt               $ (5,000,000)              
Write-off of underwriter's discount       409,000                      
Amortization of debt issuance costs       $ 27,000                      
Convertible Debt | 5.875% Unsecured Convertible Senior Notes                              
Debt Instrument [Line Items]                              
Face amount                 $ 120,000,000         $ 120,000,000  
Effective interest rate     5.875%           5.875% 5.875%       5.875%  
Amount of underwriter's discount                 $ 2,082,311 $ 2,656,739       $ 3,500,000  
Deferred debt financing costs, net                 $ 301,859 385,131          
Conversion ratio                 0.02            
Conversion price (in dollars per share) | $ / shares                 $ 50.00            
Repurchases of convertible debt   $ 1,300,000                          
Interest expense   24,000             $ 7,593,138 7,634,250 $ 2,979,034        
Gain (loss) on extinguishment of debt                   576,000          
Write-off of underwriter's discount                 574,428 577,539 225,458        
Amortization of debt issuance costs                 83,272 $ 83,723 $ 31,493        
Convertible debt outstanding                 $ 118,100,000            
Redemption price in percentage                 100.00%            
Deferred debt costs                           $ 508,000  
Sale price of common stock, percentage                 125.00%            
Number of trading days | tradingDay                 20            
Number of consecutive trading days | tradingDay                 30            
Minimum balance to trigger default upon qualified event                 $ 25,000,000            
Debt instrument, repurchased face amount   $ 2,000,000                          
Effective percentage                 6.40% 6.40% 6.40%