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Preferred Stock (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 02, 2021
$ / shares
shares
Jun. 30, 2022
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2022
USD ($)
day
$ / shares
shares
Jun. 30, 2021
USD ($)
shares
Dec. 31, 2021
USD ($)
$ / shares
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Class of Stock [Line Items]                  
Series Preferred Stock   $ 4,064 $ 1,893 $ 7,367 $ 4,281        
Common Stock                  
Class of Stock [Line Items]                  
Common Shares Issued (in shares) | shares   0 5,636,000 0 7,171,000        
Series B Preferred Stock                  
Class of Stock [Line Items]                  
Temporary equity, dividend rate (as a percent)       5.50% 5.50%        
Initial conversion/redemption price (in dollars per share) | $ / shares   $ 18.70   $ 18.70          
Temporary equity conversion rate       1.3372          
Annual preferred stock dividend (in dollars per share) | $ / shares       $ 1.375          
Consecutive trading days | day       45          
Days ending prior to notice of conversion       3 days          
Redemption price (in dollars per share) | $ / shares   $ 25.00   $ 25.00          
Redemption percent of liquidation preference   103.00%   103.00%          
Liquidation preference per share (in dollars per share) | $ / shares   $ 25.00   $ 25.00          
Series Preferred Stock   $ 1,058 $ 1,068 $ 2,116 $ 2,631        
Preferred Shares Tendered (in shares) | shares   0 1,437,000 0 1,923,000        
Series Preferred Stock   $ 65,426   $ 65,426   $ 65,426      
Temporary equity, par value (in dollars per share) | $ / shares   $ 0.01   $ 0.01   $ 0.01      
Series B Preferred Stock | Minimum                  
Class of Stock [Line Items]                  
Percent of conversion price   110.00%   110.00%          
Series B Preferred Stock | Preferred Stock                  
Class of Stock [Line Items]                  
Series Preferred Stock   $ 65,426 $ 66,064 $ 65,426 $ 66,064 $ 65,426 $ 65,426 $ 96,609 $ 106,949
Series E Preferred Stock                  
Class of Stock [Line Items]                  
Initial conversion/redemption price (in dollars per share) | $ / shares   $ 25.00   $ 25.00          
Temporary equity conversion rate       5.69476          
Cash Redemptions of preferred stock - Series E (in shares) | shares   2,000              
Cash redemptions of preferred stock - Series E   $ 50              
Sale of temporary equity, offering price (in dollars per share) | $ / shares   $ 25.00   $ 25.00          
Period of preferred dividends in arrears (in months)       18 months          
Redemption fee, percent of stated value on the original issue date   8.00%   8.00%          
Redemption fee, percent of stated value beginning on the first anniversary   5.00%   5.00%          
Redemption fee, percent of stated value beginning on the third anniversary   0.00%   0.00%          
Issuance of preferred stock (in shares) | shares   1,312,000   2,789,000          
Net proceeds   $ 29,518   $ 62,754          
Series Preferred Stock   103,697   103,697   39,339      
Adjustments to Series Preferred Stock       5,051   $ 3,128      
Dividends declared on Series Preferred Stock   $ 2,053 0 $ 3,452 0        
Temporary equity, par value (in dollars per share) | $ / shares   $ 0.01   $ 0.01   $ 0.01      
Series E Preferred Stock | Initial Closing Date                  
Class of Stock [Line Items]                  
Temporary equity, dividend rate (as a percent)       0.0008%          
Series E Preferred Stock | First Anniversary From Initial Closing Date                  
Class of Stock [Line Items]                  
Temporary equity, dividend rate (as a percent)       0.0775%          
Series E Preferred Stock | Second Anniversary From Initial Closing Date                  
Class of Stock [Line Items]                  
Temporary equity, dividend rate (as a percent)       0.00075%          
Series E Preferred Stock | Preferred Stock                  
Class of Stock [Line Items]                  
Cash Redemptions of preferred stock - Series E (in shares) | shares   2,000   2,000          
Cash redemptions of preferred stock - Series E   $ 50   $ 50          
Issuance of preferred stock (in shares) | shares   1,319,000   2,800,000          
Series Preferred Stock   $ 103,697   $ 103,697   $ 39,339 73,404    
Series E Preferred Stock | Equity Distribution Agreements                  
Class of Stock [Line Items]                  
Sale of temporary equity, number of shares authorized in transaction (in shares) | shares 20,000,000                
Sale of temporary equity, offering price (in dollars per share) | $ / shares $ 25.00                
Series E Preferred Stock | Dividend Reinvestment Plan                  
Class of Stock [Line Items]                  
Sale of temporary equity, number of shares authorized in transaction (in shares) | shares 8,000,000                
Sale of temporary equity, offering price (in dollars per share) | $ / shares $ 25.00                
Series M Preferred Stock                  
Class of Stock [Line Items]                  
Temporary equity, dividend rate (as a percent)       0.00082%          
Sale of temporary equity, offering price (in dollars per share) | $ / shares 25.00 $ 25.00   $ 25.00          
Redemption fee, percent of stated value on the original issue date   1.50%   1.50%          
Redemption fee, percent of stated value beginning on the first anniversary   0.00%   0.00%          
Issuance of preferred stock (in shares) | shares   334,000   367,000          
Net proceeds   $ 8,087   $ 8,897          
Series Preferred Stock   9,750   9,750   715      
Adjustments to Series Preferred Stock       363   $ 133      
Dividends declared on Series Preferred Stock   $ 128 $ 0 $ 149 $ 0        
Temporary equity, par value (in dollars per share) | $ / shares $ 0.01 $ 0.01   $ 0.01   $ 0.01      
Dividend rate (in dollars per share) | $ / shares       $ 2.05          
Dividend rate increase each year from original issuance (as a percent)       0.10%          
Dividend rate, maximum percentage of stated value   8.70%   8.70%          
Series M Preferred Stock | Preferred Stock                  
Class of Stock [Line Items]                  
Issuance of preferred stock (in shares) | shares   334,000   367,000          
Series Preferred Stock   $ 9,750   $ 9,750   $ 715 $ 1,538    
Series M Preferred Stock | Equity Distribution Agreements                  
Class of Stock [Line Items]                  
Sale of temporary equity, number of shares authorized in transaction (in shares) | shares 20,000,000                
Sale of temporary equity, offering price (in dollars per share) | $ / shares $ 25.00                
Series M Preferred Stock | Dividend Reinvestment Plan                  
Class of Stock [Line Items]                  
Sale of temporary equity, number of shares authorized in transaction (in shares) | shares 8,000,000                
Sale of temporary equity, offering price (in dollars per share) | $ / shares $ 25.00