Quarterly report pursuant to Section 13 or 15(d)

SHAREHOLDERS' EQUITY (Details)

v3.20.2
SHAREHOLDERS' EQUITY (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
shares
Jun. 30, 2020
USD ($)
Rate
shares
Dec. 31, 2019
USD ($)
shares
May 27, 2020
USD ($)
$ / shares
Equity, Class of Treasury Stock [Line Items]        
Document Period End Date   Jun. 30, 2020    
Preferred Stock, Shares Outstanding | shares 745,500 745,500 740,500  
Preferred Stock, Value, Outstanding $ 1,697,000 $ 1,697,000    
Preferred stock $ 1,697,000 $ 1,697,000 $ 1,203,000  
Series B Preferred Stock        
Equity, Class of Treasury Stock [Line Items]        
Depository Share, Percent Interest in Preferred Stock     0.025  
Preferred Stock, Shares Outstanding | shares 35,500 35,500    
Preferred Stock, Value, Outstanding $ 23,000 $ 23,000    
Preferred Stock, Redemption Date   Jan. 15, 2017    
Series C Preferred Stock        
Equity, Class of Treasury Stock [Line Items]        
Preferred Stock, Shares Outstanding | shares 100,000 100,000    
Preferred Stock, Value, Outstanding $ 100,000 $ 100,000    
Preferred Stock, Redemption Date   Jan. 15, 2022    
Preferred Stock, Dividend Rate, Percentage | Rate   5.875%    
Series E Preferred Stock        
Equity, Class of Treasury Stock [Line Items]        
Preferred Stock, Shares Outstanding | shares 5,000 5,000    
Preferred Stock, Value, Outstanding $ 495,000 $ 495,000    
Preferred Stock, Redemption Date   Apr. 15, 2023    
Preferred Stock, Dividend Rate, Percentage | Rate   5.70%    
Series D Preferred Stock        
Equity, Class of Treasury Stock [Line Items]        
Preferred Stock, Shares Outstanding | shares 400,000 400,000    
Preferred Stock, Value, Outstanding $ 386,000 $ 386,000    
Preferred Stock, Redemption Date   Apr. 15, 2021    
Preferred Stock, Dividend Rate, Percentage | Rate   6.25%    
Series D Preferred Stock2 [Member]        
Equity, Class of Treasury Stock [Line Items]        
Preferred Stock, Shares Outstanding | shares 200,000 200,000    
Preferred Stock, Value, Outstanding $ 199,000 $ 199,000    
Preferred Stock, Redemption Date   Apr. 15, 2021    
Preferred Stock, Dividend Rate, Percentage | Rate   6.25%    
Series F Preferred Stock        
Equity, Class of Treasury Stock [Line Items]        
Preferred Stock, Liquidation Preference Per Share | $ / shares       $ 100,000
Depositary Shares, Liquidation Preference Per Share | $ / shares       $ 1,000
Preferred Stock, Shares Outstanding | shares 5,000 5,000    
Preferred Stock, Value, Outstanding $ 494,000 $ 494,000    
Preferred stock       $ 500,000
Depositary Shares, Issued | shares 500,000      
Preferred Stock, Par or Stated Value Per Share | $ / shares       $ 0.01
Payments of Stock Issuance Costs $ 6,000      
Preferred Stock, Redemption Date   Jul. 15, 2030    
Preferred Stock, Dividend Rate, Percentage 5.625% 5.625%    
Preferred Stock, Liquidation Preference, Value $ 100 $ 100    
London Interbank Offered Rate (LIBOR) | Series B Preferred Stock        
Equity, Class of Treasury Stock [Line Items]        
Preferred Stock, Basis Spread On Variable Rate 2.70% 2.70%