Quarterly report pursuant to Section 13 or 15(d)

COMMON AND PREFERRED STOCK (Details)

v3.21.1
COMMON AND PREFERRED STOCK (Details)
3 Months Ended
Apr. 23, 2021
USD ($)
$ / shares
Feb. 09, 2021
USD ($)
$ / shares
shares
Sep. 18, 2020
shares
Mar. 31, 2021
USD ($)
payment
$ / shares
shares
Mar. 31, 2020
USD ($)
shares
Dec. 31, 2020
$ / shares
shares
Sep. 17, 2020
$ / shares
May 31, 2011
USD ($)
Class of Stock [Line Items]                
Reverse stock split ratio     0.1          
Common stock, shares issued (in shares)     44,663,990 60,361,547        
Common stock, shares authorized (in shares)     135,000,000 135,000,000 [1]   135,000,000 [1]    
Common stock, par value (in dollars per share) | $ / shares       $ 0.001 [1]   $ 0.001 [1] $ 0.001  
Common stock, shares outstanding (in shares)     44,663,990 60,361,547 [1]   45,908,779 [1]    
Preferred stock, shares authorized (in shares)       5,000,000   5,000,000    
Preferred stock, par value (in dollars per share) | $ / shares       $ 0.001   $ 0.001    
Preferred stock, shares outstanding (in shares)       2,218,732   2,218,732    
Proceeds from issuance of common stock | $       $ 132,900,000 $ 0      
Stock repurchase program, amount approved | $               $ 150,000,000.0
Stock repurchased (in shares)       0 0      
Underwritten Public Offering                
Class of Stock [Line Items]                
Proceeds from issuance of common stock | $   $ 132,900,000            
Series A Preferred Stock                
Class of Stock [Line Items]                
Preferred stock, shares authorized (in shares)       5,000,000        
Preferred stock, par value (in dollars per share) | $ / shares       $ 0.001        
Preferred stock, shares issued (in shares)       2,218,732        
Preferred stock, shares outstanding (in shares)       2,218,732        
Preferred stock, dividend rate       6.50%        
Preferred stock, liquidation preference per share (in dollars per share) | $ / shares       $ 100        
Amount of undeclared accumulated preferred stock dividends | $       $ 20,100,000        
Convertible preferred stock coversion ratio     4.363 4.363     43.63  
Conversion price (in dollars per share) | $ / shares       $ 22.92        
Threshold of common stock price as a percent of conversion price triggering conversion       145.00%        
Threshold trading days at which conversion occurs       20 days        
Conversion trading days window       30 days        
Number of annual dividend payments | payment       8        
Series A Preferred Stock | Subsequent Event                
Class of Stock [Line Items]                
Dividends per share (in dollars per share) | $ / shares $ 9.9163              
Aggregate dividend amount | $ $ 22,000,000.0              
Common Stock                
Class of Stock [Line Items]                
Common stock surrendered by certain employees to cover tax obligations (shares)       60,529        
Fair value of common stock surrendered by certain employees to cover tax obligations | $       $ 800,000        
Common Stock | Underwritten Public Offering                
Class of Stock [Line Items]                
Number of shares issued in transaction (in shares)   14,375,000            
Sale of stock, price per share (dollars per share) | $ / shares   $ 9.75            
[1] Adjusted for the 1-for-10 reverse stock split.