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Fair Value - Schedule of Reported Fair Values of Liabilities (Details) - Fair Value, Recurring - Level 3 - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Contingent Consideration |  |
Fair Value Liabilities Measured On Recurring Basis [Line Items] |  |
Total liabilities | $ 29,932 | $ 29,114
Put Option Liability |  |
Fair Value Liabilities Measured On Recurring Basis [Line Items] |  |
Total liabilities |  | 3,261
Warrant Liability |  |
Fair Value Liabilities Measured On Recurring Basis [Line Items] |  |
Total liabilities |  | 372
Contingent Value Rights |  |
Fair Value Liabilities Measured On Recurring Basis [Line Items] |  |
Total liabilities |  | $ 60

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- Definition Fair value of financial and nonfinancial obligations. + 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 (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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