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Condensed Consolidated Statement of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-In-Capital
Accumulated Deficit
Adjustment due to Adoption of ASU
Adjustment due to Adoption of ASU
Accumulated Deficit
Stockholders' equity, beginning balance (in shares) at Dec. 31, 2017   13,670,393 107,121,235        
Stockholders' equity, beginning balance at Dec. 31, 2017 $ 2,088,143 $ 137 $ 1,071 $ 2,170,078 $ (83,143)    
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Capital increase (decrease) related to Equity Incentive Plan (in shares)     378,855        
Capital increase (decrease) related to Equity Incentive Plan 8,814   $ 5 8,809      
Issuance of common stock (in shares)     15,525,000        
Issuance of common stock 275,879   $ 155 275,724      
Issuance of notes 4,406            
Redemption of preferred stock 179,908     179,908      
Conversions of convertible senior notes for common stock (in shares)     10,828,475        
Conversions of convertible senior notes for common stock 108   $ 108 0      
Offering costs (484)     (484)      
Net income 219,986       219,986    
Dividends declared on preferred stock - (27,340)       (27,340)    
Dividends declared on common stock - (239,673)       (239,673)    
Stockholders' equity, ending balance (in shares) at Dec. 31, 2018   13,670,393 133,853,565        
Stockholders' equity, ending balance at Dec. 31, 2018 2,509,747 $ 137 $ 1,339 2,638,441 (130,170)    
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Capital increase (decrease) related to Equity Incentive Plan (in shares)     466,370        
Capital increase (decrease) related to Equity Incentive Plan 10,901   $ 4 10,897      
Issuance of common stock (in shares)     17,250,000        
Issuance of common stock 315,157   $ 172 314,985      
Redemption of preferred stock (in shares)   (6,900,000)          
Redemption of preferred stock (172,500) $ (69)   (172,431)      
Conversions of convertible senior notes for common stock (in shares)     1,967,361        
Conversions of convertible senior notes for common stock 33,778   $ 20 33,758      
Offering costs (333)     (333)      
Net income 230,174       230,174    
Dividends declared on preferred stock - (18,525)       (18,525)    
Dividends declared on common stock - (278,424)       (278,424)    
Stockholders' equity, ending balance (in shares) at Dec. 31, 2019   6,770,393 153,537,296        
Stockholders' equity, ending balance at Dec. 31, 2019 2,629,975 $ 68 $ 1,535 2,825,317 (196,945) $ (30,867) $ (30,867)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Capital increase (decrease) related to Equity Incentive Plan (in shares)     591,203        
Capital increase (decrease) related to Equity Incentive Plan 10,327   $ 6 10,321      
Repurchase of common stock (in shares)     (14,832,632)        
Repurchase of common stock (127,994)   $ (148) (127,846)      
Net income 18,377       18,377    
Dividends declared on preferred stock - (13,540)       (13,540)    
Dividends declared on common stock - (215,749)       (215,749)    
Stockholders' equity, ending balance (in shares) at Dec. 31, 2020   6,770,393 139,295,867        
Stockholders' equity, ending balance at Dec. 31, 2020 $ 2,270,529 $ 68 $ 1,393 $ 2,707,792 $ (438,724)    
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201613Member