Significant Accounting Policies - Basis of Presentation (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Equity method investment, assets	$ 220,115,000	$ 264,300,000
Maximum loss exposure	1,800,000	2,200,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Equity method investment, assets	1,500,000	1,800,000
Equity Method Investment, Nonconsolidated Investee or Group of Investees | VIEs that are not consolidated
Variable Interest Entity [Line Items]
Equity method investment, assets	$ 228,400,000	$ 234,700,000