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Fair Value Measurements - Narrative (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Marketable Securities and Fair Value Measurements (Textual) [Abstract]
Derivative liability	$ 119,796,000	$ 8,819,023
Level 1
Marketable Securities and Fair Value Measurements (Textual) [Abstract]
Number of shares held in an affiliated entity (in shares)	1,644,155
Level 3
Marketable Securities and Fair Value Measurements (Textual) [Abstract]
Derivative liability	$ 7,100,000
Common stock | Level 1
Marketable Securities and Fair Value Measurements (Textual) [Abstract]
Investment owned (in shares)	597,808

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- Definition

Marketable securities and fair value measurements.

+ References

No definition available.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
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Balance held at close of period in number of shares.

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Number of shares of affiliates held for management investment companies.

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