INTANGIBLE ASSETS AND GOODWILL - INTANGIBLE ASSETS (Details) - USD ($)
$ in Thousands |
Apr. 30, 2018 |
Jan. 31, 2018 |
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Finite-Lived Intangible Assets, Gross |
$ 735,477
|
$ 746,127
|
| Finite-Lived Intangible Assets, Accumulated Amortization |
(527,700)
|
(520,034)
|
| Intangible assets with finite lives, Net |
207,777
|
226,093
|
| Customer Relationships |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Finite-Lived Intangible Assets, Gross |
434,615
|
438,664
|
| Finite-Lived Intangible Assets, Accumulated Amortization |
(285,600)
|
(281,592)
|
| Intangible assets with finite lives, Net |
149,015
|
157,072
|
| Developed Technology |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Finite-Lived Intangible Assets, Gross |
266,725
|
273,156
|
| Finite-Lived Intangible Assets, Accumulated Amortization |
(215,404)
|
(212,571)
|
| Intangible assets with finite lives, Net |
51,321
|
60,585
|
| Trade Names |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Finite-Lived Intangible Assets, Gross |
26,650
|
26,820
|
| Finite-Lived Intangible Assets, Accumulated Amortization |
(19,327)
|
(18,570)
|
| Intangible assets with finite lives, Net |
7,323
|
8,250
|
| Non-competition Agreements |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Finite-Lived Intangible Assets, Gross |
3,047
|
3,047
|
| Finite-Lived Intangible Assets, Accumulated Amortization |
(2,929)
|
(2,861)
|
| Intangible assets with finite lives, Net |
118
|
186
|
| Distribution Network |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Finite-Lived Intangible Assets, Gross |
4,440
|
4,440
|
| Finite-Lived Intangible Assets, Accumulated Amortization |
(4,440)
|
(4,440)
|
| Intangible assets with finite lives, Net |
$ 0
|
$ 0
|