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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
ASSETS    
Allowance for doubtful notes receivable $ 126 $ 227
Liabilities [Abstract]    
Series B preferred stock, shares outstanding (in shares) 7,158,000 4,277,000
Preferred stock, $0.01 value, 80,000,000 shares authorized:    
Preferred stock par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 80,000,000 80,000,000
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 250,000,000 250,000,000
Common stock, shares issued (in shares) 65,365,470 38,274,770
Common stock, shares outstanding (in shares) 65,365,470 38,274,770
Series B Preferred Stock    
Liabilities [Abstract]    
Temporary equity, dividend rate (as a percent) 5.50% 5.50%
Series preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Series B preferred stock, shares issued (in shares) 3,078,017 5,031,473
Series B preferred stock, shares outstanding (in shares) 3,078,017 5,031,473
Series E Preferred Stock    
Liabilities [Abstract]    
Series preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Series B preferred stock, shares issued (in shares) 1,710,399 0
Series B preferred stock, shares outstanding (in shares) 1,710,399 0
Series M Preferred Stock    
Liabilities [Abstract]    
Preferred stock dividend rate (in dollars per share) 0.00082%  
Series preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Series B preferred stock, shares issued (in shares) 29,044 0
Series B preferred stock, shares outstanding (in shares) 29,044 0
Series D Preferred Stock    
Liabilities [Abstract]    
Preferred stock dividend rate (in dollars per share) 8.25% 8.25%
Preferred stock, $0.01 value, 80,000,000 shares authorized:    
Preferred stock, shares issued (in shares) 1,600,000 1,600,000
Preferred stock, shares outstanding (in shares) 1,600,000 1,600,000