Annual report pursuant to Section 13 and 15(d)

Income Taxes - Common and Preferred Stock Distribution (Details)

v3.20.4
Income Taxes - Common and Preferred Stock Distribution (Details) - $ / shares
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) $ 0.900 $ 3.000 $ 3.000
Total Distribution per Share      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.9000 3.0000 3.0000
Preferred stock, dividends declared per share (in dollars per share) 1.8436 1.8436 1.8436
Total Ordinary Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 1.9537 2.1384
Preferred stock, dividends declared per share (in dollars per share) 0 1.7872 1.3140
Qualified Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0 0
Preferred stock, dividends declared per share (in dollars per share) 0 0 0
Capital Gain Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.0606 0.8616
Preferred stock, dividends declared per share (in dollars per share) 0 0.0564 0.5296
Nondividend Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.9000 0.9857  
Preferred stock, dividends declared per share (in dollars per share) 1.8436 0  
Unrecaptured Section 1250 Gain      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share)     0.4028
Preferred stock, dividends declared per share (in dollars per share)     0.2476
Section 199A Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 1.9537 2.1384
Preferred stock, dividends declared per share (in dollars per share) 0 1.7872 1.3140
Installment One | Total Distribution per Share      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.7500 0.7500 0.7500
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0.4609 0.4609
Installment One | Total Ordinary Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.5803 0.5346
Preferred stock, dividends declared per share (in dollars per share) 0 0.4483 0.3285
Installment One | Qualified Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0 0
Preferred stock, dividends declared per share (in dollars per share) 0 0 0
Installment One | Capital Gain Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.0156 0.2154
Preferred stock, dividends declared per share (in dollars per share) 0 0.0126 0.1324
Installment One | Nondividend Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.7500 0.1541  
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0  
Installment One | Unrecaptured Section 1250 Gain      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share)     0.1007
Preferred stock, dividends declared per share (in dollars per share)     0.0619
Installment One | Section 199A Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.5803 0.5346
Preferred stock, dividends declared per share (in dollars per share) 0 0.4483 0.3285
Installment Two | Total Distribution per Share      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.0500 0.7500 0.7500
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0.4609 0.4609
Installment Two | Total Ordinary Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.4578 0.5346
Preferred stock, dividends declared per share (in dollars per share) 0 0.4463 0.3285
Installment Two | Qualified Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0 0
Preferred stock, dividends declared per share (in dollars per share) 0 0 0
Installment Two | Capital Gain Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.0150 0.2154
Preferred stock, dividends declared per share (in dollars per share) 0 0.0146 0.1324
Installment Two | Nondividend Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.0500 0.2772  
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0  
Installment Two | Unrecaptured Section 1250 Gain      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share)     0.1007
Preferred stock, dividends declared per share (in dollars per share)     0.0619
Installment Two | Section 199A Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.4578 0.5346
Preferred stock, dividends declared per share (in dollars per share) 0 0.4463 0.3285
Installment Three | Total Distribution per Share      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.0500 0.7500 0.7500
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0.4609 0.4609
Installment Three | Total Ordinary Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.4578 0.5346
Preferred stock, dividends declared per share (in dollars per share) 0 0.4463 0.3285
Installment Three | Qualified Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0 0
Preferred stock, dividends declared per share (in dollars per share) 0 0 0
Installment Three | Capital Gain Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.0150 0.2154
Preferred stock, dividends declared per share (in dollars per share) 0 0.0146 0.1324
Installment Three | Nondividend Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.0500 0.2772  
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0  
Installment Three | Unrecaptured Section 1250 Gain      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share)     0.1007
Preferred stock, dividends declared per share (in dollars per share)     0.0619
Installment Three | Section 199A Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.4578 0.5346
Preferred stock, dividends declared per share (in dollars per share) 0 0.4463 0.3285
Installment Four | Total Distribution per Share      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.0500 0.7500 0.7500
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0.4609 0.4609
Installment Four | Total Ordinary Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.4578 0.5346
Preferred stock, dividends declared per share (in dollars per share) 0 0.4463 0.3285
Installment Four | Qualified Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0 0
Preferred stock, dividends declared per share (in dollars per share) 0 0 0
Installment Four | Capital Gain Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.0150 0.2154
Preferred stock, dividends declared per share (in dollars per share) 0 0.0146 0.1324
Installment Four | Nondividend Distributions      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0.0500 0.2772  
Preferred stock, dividends declared per share (in dollars per share) 0.4609 0  
Installment Four | Unrecaptured Section 1250 Gain      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share)     0.1007
Preferred stock, dividends declared per share (in dollars per share)     0.0619
Installment Four | Section 199A Dividends      
Dividends Payable [Line Items]      
Common stock, dividends declared per share (in dollars per share) 0 0.4578 0.5346
Preferred stock, dividends declared per share (in dollars per share) $ 0 $ 0.4463 $ 0.3285