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Goodwill and Other Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Mar. 31, 2019
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 216,187 | $ 216,187
Accumulated Amortization | (110,923) | (97,188)
Net Carrying Amount | 105,264 | 118,999
Trademark and trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 36,370 | 36,370
Accumulated Amortization | (16,120) | (13,659)
Net Carrying Amount | 20,250 | 22,711
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 95,207 | 95,207
Accumulated Amortization | (68,883) | (62,341)
Net Carrying Amount | 26,324 | 32,866
Customer contracts/relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 84,610 | 84,610
Accumulated Amortization | (25,920) | (21,188)
Net Carrying Amount | $ 58,690 | $ 63,422

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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