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INTANGIBLE ASSETS AND GOODWILL - Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands | 6 Months Ended |
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Sep. 30, 2019 | Mar. 31, 2019
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 45,731 | $ 37,277
Accumulated Amortization | (17,321) | (25,597)
Net Carrying Amount | 28,410 | 11,680
Full amortized intangible assets written off | 11,300 |
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 33,466 | 25,702
Accumulated Amortization | (12,706) | (15,409)
Net Carrying Amount | 20,760 | 10,293
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 11,293 | 9,467
Accumulated Amortization | (4,534) | (8,080)
Net Carrying Amount | 6,759 | 1,387
Trade and domain names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 972 | 2,108
Accumulated Amortization | (81) | (2,108)
Net Carrying Amount | $ 891 | $ 0

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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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- Definition Amount before 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 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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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