DEBT (Revolving Credit Agreement) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date	Jun. 30, 2022
Amounts due banks (Note 9)	$ 34,857	$ 0
Revolving credit agreement
Debt Instrument [Line Items]
Borrowing capacity under the line of credit	$ 400,000
Credit agreement initiation date	Jun. 30, 2017
Credit facility covenant compliance	As of December 31, 2019, the Company was in compliance with all of its covenants
Amounts due banks (Note 9)	$ 23,000
Debt Instrument, Term	5 years
Additional increase in borrowing capacity of the line of credit available at the entity's option	$ 100,000