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Summary of Significant Accounting Policies - Fair Value (Details) - Measured on a recurring basis - Acquisitions - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2019
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Contingent Consideration |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Fair value | $ 10,833 |  |  |  |  |
Convertible Note |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Fair value | 5,006 |  | $ 5,006 |  |  |
Convertible Senior Notes |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Fair value | 388,786 |  |  |  |  |
Significant Other Observable Inputs (Level 2) | Convertible Senior Notes |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Fair value | 388,786 |  |  |  |  |
Significant Unobservable Inputs (Level 3) | Contingent Consideration |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Fair value | 10,833 | $ 10,833 |  |  |  |
Significant Unobservable Inputs (Level 3) | Convertible Note |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Fair value | $ 5,006 | $ 5,006 | $ 5,006 | $ 5,006 | $ 5,006 | $ 5,006

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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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