IMPAIRMENT LOSSES AND RESTRUCTURING CHARGES (Textuals) (Details) - USD ($) $ in Thousands	3 Months Ended	4 Months Ended	6 Months Ended	9 Months Ended
	Dec. 31, 2018	Mar. 31, 2018	Sep. 30, 2018	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Impairment loss on property	$ 483	$ 0		$ 483
Accruals				3,479
Restructuring Reserve	3,028	1,868		3,028
Employee-related
Restructuring Cost and Reserve [Line Items]
Accruals			$ 1,948	1,948
Restructuring Reserve	760	0		760
Facilities-related
Restructuring Cost and Reserve [Line Items]
Accruals			$ 1,531	1,531
Restructuring Reserve	$ 2,268	$ 1,868		$ 2,268