Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Deferred Stock) (Details)

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STOCK-BASED COMPENSATION (Deferred Stock) (Details) - Deferred Compensation, Share-based Payments [Member] - $ / shares
shares in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Summary of Deferred Stock [Roll Forward]      
Unvested at beginning of period (in shares) 2,500 2,500 0
Awarded (in shares) 0 0 2,500
Forfeited (in shares) 0 0 0
Vested (in shares) (14) 0 0
Unvested at end of period (in shares) 2,486 2,500 2,500
Summary of deferred stock awards, additional disclosures [Abstract]      
Unvested at beginning of period (in dollars per share) $ 26.69 $ 26.69 $ 0.00
Awarded (in dollars per share) 0.00 0.00 26.69
Forfeited (in dollars per share) 0.00 0.00 0.00
Vested (in dollars per share) 36.08 0.00 0.00
Unvested at end of period (in dollars per share) $ 26.63 $ 26.69 $ 26.69
Awarded (in shares) 0 0 2,500
Deferred compensation arrangement, maximum contractual term     5 years
Deferred compensation arrangement, shares issued 1,500 200  
Deferred compensation arrangement, common stock reserved for future issuance 800    
Minimum [Member]      
Summary of deferred stock awards, additional disclosures [Abstract]      
Vesting Period 1 year 1 year 1 year
Maximum [Member]      
Summary of deferred stock awards, additional disclosures [Abstract]      
Vesting Period 4 years 4 years 5 years