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Goodwill and Other Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Mar. 31, 2018
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 216,187 | $ 160,555
Accumulated Amortization | (97,188) | (73,008)
Net Carrying Amount | 118,999 | 87,547
Trademarks and trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 36,370 | 23,870
Accumulated Amortization | (13,659) | (9,482)
Net Carrying Amount | 22,711 | 14,388
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 95,207 | 77,175
Accumulated Amortization | (62,341) | (50,755)
Net Carrying Amount | 32,866 | 26,420
Customer contracts/relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 84,610 | 59,510
Accumulated Amortization | (21,188) | (12,771)
Net Carrying Amount | $ 63,422 | $ 46,739

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