BUSINESS COMBINATIONS BUSINESS COMBINATIONS - YEAR ENDED JANUARY 31, 2018 - SUMMARY (Details) - USD ($)
$ in Thousands |
3 Months Ended |
12 Months Ended |
Apr. 30, 2018 |
Apr. 30, 2017 |
Jan. 31, 2018 |
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
$ 1,376,264
|
|
$ 1,388,299
|
| Individually Insignificant Business Combinations - Year Ended January 31, 2018 |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Payments to Acquire Businesses, Gross |
|
|
134,300
|
| Cash payment made at closing |
|
|
106,049
|
| Business Acquisition Contingent Consideration Fair Value Disclosure |
|
|
47,300
|
| Fair value of contingent consideration |
|
|
25,874
|
| Goodwill |
|
|
80,840
|
| Business Acquisition, Goodwill, Expected Tax Deductible Amount |
|
|
14,500
|
| Business Acquisition, Purchase Price Allocation, Goodwill, Tax Not Deductible Amount |
|
|
66,400
|
| Transaction and Related Costs, Including Integration Costs |
1,000
|
$ 100
|
|
| Enterprise Intelligence | Individually Insignificant Business Combinations - Year Ended January 31, 2018 |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
|
|
77,000
|
| Cyber Intelligence |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
$ 136,732
|
|
137,206
|
| Cyber Intelligence | Individually Insignificant Business Combinations - Year Ended January 31, 2018 |
|
|
|
| Business Acquisition [Line Items] |
|
|
|
| Goodwill |
|
|
$ 3,800
|