RESTRUCUTRING CHARGES (Cost Incurred and Expected to be Incurred) (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Total Costs Expected to be Incurred	$ 7,538
Cumulative costs recognized to date	4,506
Employee termination costs
Restructuring Cost and Reserve [Line Items]
Total Costs Expected to be Incurred	2,897
Cumulative costs recognized to date	2,270
Inventory Impairment
Restructuring Cost and Reserve [Line Items]
Total Costs Expected to be Incurred	1,401
Cumulative costs recognized to date	1,401
Facility related costs
Restructuring Cost and Reserve [Line Items]
Total Costs Expected to be Incurred	862
Cumulative costs recognized to date	195
Consulting fees
Restructuring Cost and Reserve [Line Items]
Total Costs Expected to be Incurred	1,715
Cumulative costs recognized to date	315
Other related costs
Restructuring Cost and Reserve [Line Items]
Total Costs Expected to be Incurred	663
Cumulative costs recognized to date	$ 325