Annual report pursuant to Section 13 and 15(d)

GEOGRAPHIC INFORMATION - Schedule of Revenues Attributable to Product Groups, Services and Royalties (Details)

v3.7.0.1
GEOGRAPHIC INFORMATION - Schedule of Revenues Attributable to Product Groups, Services and Royalties (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Segment Reporting, Revenue Reconciling Item [Line Items]                      
Product revenue                 $ 322,212 $ 286,217 $ 355,579
Service revenue                 144,335 148,548 155,674
Royalty revenue                 38,798 41,193 41,842
Total revenue $ 120,835 $ 133,484 $ 134,742 $ 116,284 $ 120,029 $ 128,048 $ 117,025 $ 110,856 505,345 475,958 553,095
Tape automation systems                      
Segment Reporting, Revenue Reconciling Item [Line Items]                      
Product revenue                 88,751 97,454 152,205
Disk backup systems                      
Segment Reporting, Revenue Reconciling Item [Line Items]                      
Product revenue                 51,153 39,722 54,845
Devices and media                      
Segment Reporting, Revenue Reconciling Item [Line Items]                      
Product revenue                 60,860 45,767 62,642
Scale-out tiered storage                      
Segment Reporting, Revenue Reconciling Item [Line Items]                      
Product revenue                 $ 121,448 $ 103,274 $ 85,887