STOCK-BASED COMPENSATION (Summary of Nonemployee Director Stock Award Activity) (Details) - Non-employee Directors' Stock-Based Compensation Plans [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-employee director compensation, cash	$ 297,500	$ 327,500
Weighted - average Grant Date Share Price	$ 31.59	$ 26.88
Directors' Fees Expense	$ 595,000	$ 655,000
Common Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	2,222
Deferred Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	7,194	12,182