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Investments - Narrative (Details)	Dec. 31, 2020	Jan. 01, 2019	Dec. 31, 2018
TP Fund
Investment [Line Items]
Equity Method Investment, Ownership Percentage	86.10%
TP GP
Investment [Line Items]
Equity Method Investment, Ownership Percentage	13.90%
TP Fund
Investment [Line Items]
Annual investment management fee		1.25%	1.50%

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Annual Investment Management Fee

+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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