BUSINESS REORGANIZATION EXPENSES CHANGE IN ACCRUED REORGANIZATION EXPENSES (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
Restructuring Reserve [Roll Forward]
Balance, beginning of year	$ 2,571
Changes in estimate	712
Restructuring and Related Cost, Incurred Cost	0
Payments	(2,079)
Balance, end of period	1,204
Facility Closing
Restructuring Reserve [Roll Forward]
Balance, beginning of year	2,273
Changes in estimate	698
Restructuring and Related Cost, Incurred Cost	0
Payments	(1,917)
Balance, end of period	1,054
One-time Termination Benefits
Restructuring Reserve [Roll Forward]
Balance, beginning of year	266
Changes in estimate	(11)
Restructuring and Related Cost, Incurred Cost	0
Payments	(124)
Balance, end of period	131
Other associated costs
Restructuring Reserve [Roll Forward]
Balance, beginning of year	32
Changes in estimate	25
Restructuring and Related Cost, Incurred Cost	0
Payments	(38)
Balance, end of period	$ 19