SUMMARY OF SIGNIFICANT ACCOUNTING POLICIE (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
AOCI
Beginning balance	$ 1,127,758	$ 1,115,840	$ 1,025,156	$ 1,115,840	$ 527,126
Other comprehensive income	(240)	(258)	0	(498)	0
Ending balance	1,186,724	1,127,758	$ 1,065,161	1,186,724	$ 1,065,161
AOCI
AOCI
Beginning balance		$ (823)		(823)
Ending balance	$ (1,321)			$ (1,321)