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Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Mar. 31, 2020
--- | --- | ---
Finite Lived Intangible Assets [Line Items] |  |
Cost | $ 54,897 | $ 54,897
Accumulated Amortization | (13,026) | (11,015)
Net | 41,871 | 43,882
Developed technology |  |
Finite Lived Intangible Assets [Line Items] |  |
Cost | 7,926 | 7,926
Accumulated Amortization | (6,101) | (5,861)
Net | 1,825 | 2,065
Customer relationships |  |
Finite Lived Intangible Assets [Line Items] |  |
Cost | 46,971 | 46,971
Accumulated Amortization | (6,925) | (5,154)
Net | $ 40,046 | $ 41,817

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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 Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: 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),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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