STOCK-BASED COMPENSATION (Summary of Nonemployee Director Stock Award Activity) (Details) - Non-employee Directors' Stock-Based Compensation Plans - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share-based Goods and Nonemployee Services Transaction [Line Items]
Non-employee director compensation, cash	$ 327,500	$ 252,500
Weighted - average Grant Date Share Price	$ 26.88	$ 24.23
Directors' Fees Expense	$ 655,000	$ 505,000
Deferred Shares
Share-based Goods and Nonemployee Services Transaction [Line Items]
Granted	12,182	10,419