Related-Party Transactions (Details) - Management $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
Related Party Transaction [Line Items]
Due from Related Parties	$ 3.2	$ 3.2
Employee Loan Balance Increase
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	0.1	0.3
Employee Loans
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ 31.5	31.5
Employee Loan Extended
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction		$ 13.8
Secured promissory notes
Related Party Transaction [Line Items]
Notes payable, term		8 years 6 months

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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+ Details