COMMON STOCK REPURCHASES AND CASH DIVIDENDS (Common Stock Repurchases) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Stock Repurchased and Retired During Period, Value	$ 2,636	$ 7,302	$ 103,154
Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount			$ 110,000
Stock Repurchased and Retired During Period, Shares	63,000	242,000	3,144,000
Stock Repurchased and Retired During Period, Value	$ 2,600	$ 7,300	$ 103,200
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 41,300