Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Schedule of Revenue Disaggregated by Major Product (Details)

v3.19.2
REVENUE - Schedule of Revenue Disaggregated by Major Product (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenues $ 89,912 $ 111,786 $ 197,424 $ 226,381
Primary Storage Systems        
Revenues 18,517 21,743 34,470 37,483
Primary Storage Systems | Americas [Member]        
Revenues 9,710 13,232 18,889 22,255
Primary Storage Systems | Europe [Member]        
Revenues 5,628 5,761 10,943 10,259
Primary Storage Systems | Asia Pacific [Member]        
Revenues 3,179 2,750 4,638 4,969
Secondary Storage Systems        
Revenues 18,556 28,101 51,600 64,193
Secondary Storage Systems | Americas [Member]        
Revenues 9,731 17,101 28,743 37,790
Secondary Storage Systems | Europe [Member]        
Revenues 5,640 7,446 16,648 17,760
Secondary Storage Systems | Asia Pacific [Member]        
Revenues 3,185 3,554 6,209 8,643
Device and media        
Revenues 14,549 17,752 32,421 35,403
Device and media | Americas [Member]        
Revenues 7,629 10,803 17,912 20,921
Device and media | Europe [Member]        
Revenues 4,422 4,704 10,376 9,748
Device and media | Asia Pacific [Member]        
Revenues 2,498 2,245 4,133 4,734
Service        
Revenues 33,352 34,910 66,916 70,027
Service | Americas [Member]        
Revenues 21,552 22,559 43,241 45,251
Service | Europe [Member]        
Revenues 9,215 9,646 18,489 19,348
Service | Asia Pacific [Member]        
Revenues 2,585 2,705 5,186 5,428
Royalty        
Revenues 4,938 9,280 12,017 19,275
Royalty | Americas [Member]        
Revenues [1]
Royalty | Europe [Member]        
Revenues [1]
Royalty | Asia Pacific [Member]        
Revenues [1]
[1] Royalty revenue is not allocable to geographic regions.