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Goodwill and Acquired Intangible Assets (Tables) | 12 Months Ended
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Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract] |
Expected Amortization Expense for Acquired Intangible Assets | Expected amortization expense for acquired intangible assets for each of the following periods is as follows:
|  | Amortization |
|  | (In thousands) |
Expected for fiscal year 2019 |  | $ | 9,571 |
Expected for fiscal year 2020 |  |  | 7,726 |
Expected for fiscal year 2021 |  |  | 5,277 |
Expected for fiscal year 2022 |  |  | 3,451 |
Expected for fiscal year 2023 |  |  | 3,146 |
Thereafter |  |  | 2,691 |
|  | $ | 31,862 |
Allocation of Other Acquired Intangible Assets and Related Accumulated Amortization | The allocation of the other acquired intangible assets and the related accumulated amortization as of March 31, 2018 and 2017 is as follows:
|  |  |  |  |  | As of March 31, 2018 |  |  | As of March 31, 2017 |
|  | Weighted Average Useful Life |  |  | Total |  |  | Accumulated Amortization |  |  | Net Book Value |  |  | Total |  |  | Accumulated Amortization |  |  | Net Book Value |
|  | (In years) |  |  | (In thousands) |
Technology |  |  | 6 |  |  | $ | 90,652 |  |  | $ | (69,387 | ) |  | $ | 21,265 |  |  | $ | 87,592 |  |  | $ | (62,749 | ) |  | $ | 24,843 |
Contracts and customer relationships |  |  | 7 |  |  |  | 103,808 |  |  |  | (94,584 | ) |  |  | 9,224 |  |  |  | 103,034 |  |  |  | (89,083 | ) |  |  | 13,951 |
Satellite co-location rights |  |  | 9 |  |  |  | 8,600 |  |  |  | (7,668 | ) |  |  | 932 |  |  |  | 8,600 |  |  |  | (6,743 | ) |  |  | 1,857 |
Trade name |  |  | 3 |  |  |  | 5,940 |  |  |  | (5,940 | ) |  |  | — |  |  |  | 5,940 |  |  |  | (5,940 | ) |  |  | — |
Other |  |  | 6 |  |  |  | 10,137 |  |  |  | (9,696 | ) |  |  | 441 |  |  |  | 9,925 |  |  |  | (8,899 | ) |  |  | 1,026 |
Total other acquired intangible assets |  |  |  |  |  | $ | 219,137 |  |  | $ | (187,275 | ) |  | $ | 31,862 |  |  | $ | 215,091 |  |  | $ | (173,414 | ) |  | $ | 41,677 |

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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