Variable Interest Entities and Securitizations - Summary of Unconsolidated Variable Interest Entity (Details) - Variable Interest Entity Not Primary Beneficiary $ in Thousands	Mar. 31, 2022 USD ($)
Variable Interest Entity [Line Items]
Aggregate Principal Balance	$ 14,416
Carrying Value	15,913
Total Exposure	15,913
Rated Notes
Variable Interest Entity [Line Items]
Aggregate Principal Balance	14,106
Carrying Value	13,903
Total Exposure	13,903
Certificates
Variable Interest Entity [Line Items]
Carrying Value	1,700
Total Exposure	1,700
Other Assets
Variable Interest Entity [Line Items]
Aggregate Principal Balance	310
Carrying Value	310
Total Exposure	$ 310