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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Apr. 30, 2018
Goodwill and Intangible Assets [Abstract] |
Activity in Goodwill by Segment | The following table summarizes the activity in goodwill by segment as of April 30:
|  | 2017 |  |  | Foreign Translation Adjustment |  |  | 2018 |
Research |  | $ | 437,928 |  |  | $ | 25,491 |  |  | $ | 463,419 |
Publishing |  |  | 283,192 |  |  |  | 12,209 |  |  |  | 295,401 |
Solutions |  |  | 260,981 |  |  |  | — |  |  |  | 260,981 |
Total |  | $ | 982,101 |  |  | $ | 37,700 |  |  | $ | 1,019,801 |
Intangible Assets | Intangibles Intangible assets as of April 30 were as follows:
|  | 2018 |  |  | 2017 |
|  | Cost |  |  | Accumulated Amortization |  |  | Accumulated Impairment |  |  | Net |  |  | Cost |  |  | Accumulated Amortization |  |  | Net |
Intangible Assets with Determinable Lives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Content and Publishing Rights |  | $ | 824,146 |  |  | $ | (387,386 | ) |  | $ | — |  |  | $ | 436,760 |  |  | $ | 775,520 |  |  | $ | (353,923 | ) |  | $ | 421,597 |
Customer Relationships |  |  | 212,020 |  |  |  | (50,291 | ) |  |  | — |  |  |  | 161,729 |  |  |  | 233,872 |  |  |  | (64,756 | ) |  |  | 169,116 |
Brands and Trademarks |  |  | 32,111 |  |  |  | (16,011 | ) |  |  | — |  |  |  | 16,100 |  |  |  | 35,554 |  |  |  | (18,359 | ) |  |  | 17,195 |
Covenants not to Compete |  |  | 1,499 |  |  |  | (844 | ) |  |  | — |  |  |  | 655 |  |  |  | 2,377 |  |  |  | (1,420 | ) |  |  | 957 |
|  |  | 1,069,776 |  |  |  | (454,532 | ) |  |  | — |  |  |  | 615,244 |  |  |  | 1,047,323 |  |  |  | (438,458 | ) |  |  | 608,865 |
Intangible Assets with Indefinite Lives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Brands and Trademarks |  |  | 142,189 |  |  |  | — |  |  |  | (3,600 | ) |  |  | 138,589 |  |  |  | 135,061 |  |  |  | — |  |  |  | 135,061 |
Content and Publishing Rights |  |  | 94,238 |  |  |  | — |  |  |  | — |  |  |  | 94,238 |  |  |  | 84,173 |  |  |  | — |  |  |  | 84,173 |
|  | $ | 1,306,203 |  |  | $ | (454,532 | ) |  | $ | (3,600 | ) |  | $ | 848,071 |  |  | $ | 1,266,557 |  |  | $ | (438,458 | ) |  | $ | 828,099 |

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- Definition Tabular disclosure of the carrying value of intangible assets, excluding goodwill, in total and by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of the company. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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