RESTRUCTURING CHARGES - Narrative (Details) $ in Thousands	3 Months Ended				12 Months Ended
	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 Employee	Jun. 30, 2016 USD ($) Employee	Mar. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 167		$ 2,034
Q1 FY2017 Plan [Member] | Employee-Related
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 2,000
Number of employees terminated | Employee				19
Q4 FY2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		645
Q4 FY2017 Plan | Employee-Related
Restructuring Cost and Reserve [Line Items]
Restructuring charges		645			$ 1,900
Number of employees terminated | Employee			41
Q4 FY2017 Plan | Facilities Related
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 0			$ 400
Forecast | Q4 FY2017 Plan | Employee-Related
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100