Quarterly report pursuant to Section 13 or 15(d)

INTANGIBLE ASSETS - Summary of carrying value of intangible assets (Details)

v3.5.0.2
INTANGIBLE ASSETS - Summary of carrying value of intangible assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Mar. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Gross Amount $ 246,893 $ 246,893
Accumulated Amortization (246,490) (246,442)
Net Amount 403 451
Purchased technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 178,292 178,292
Accumulated Amortization (177,889) (177,841)
Net Amount 403 451
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 3,900 3,900
Accumulated Amortization (3,900) (3,900)
Net Amount 0 0
Customer lists    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 64,701 64,701
Accumulated Amortization (64,701) (64,701)
Net Amount $ 0 $ 0