Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Narrative) (Details)

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STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 8 Months Ended 9 Months Ended
Jun. 09, 2020
Jul. 10, 2019
Sep. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Mar. 20, 2020
Sep. 30, 2021
Sep. 30, 2020
May 04, 2021
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Preferred stock, shares authorized     500,000       500,000     500,000
Shares issued and sold         17,250          
Stock repurchase program, expiration date   Jun. 30, 2021                
Stock repurchase program, remaining authorized repurchase amount           $ 20,000        
Stock repurchase program, number of shares repurchased     2,300,000 1,100,000   3,700,000        
Stock repurchase program, average cost per share           $ 35.48        
Stock repurchase program, shares repurchased amount     $ 82,700 $ 42,300            
Preferred stock, shares outstanding     17,250       17,250     17,250
Net proceeds from issuance of preferred stock             $ 0 $ 166,356    
Maximum                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Stock repurchase program, authorized amount   $ 150,000             $ 125,000  
Depositary Shares                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Shares issued and sold 6,900,000                  
Number of shares to be purchased upon the exercise of options 900,000                  
Preferred stock, liquidation preference (usd per share) $ 25                  
Series A Preferred Stock                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Number of preferred stock represented by each depositary share             The Series A preferred stock is represented by depositary shares, each representing a 1/400th ownership interest in a share of Series A preferred stock      
Preferred stock, liquidation preference (usd per share) $ 10,000                  
Net proceeds from issuance of preferred stock $ 166,400