Goodwill and Intangibles - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 259,846	$ 259,846
Domestic servicing rights, at fair value | Before consolidation of securitization VIEs
Goodwill [Line Items]
Servicing rights intangibles	58,700	58,900
VIE eliminations | Domestic servicing rights, at fair value
Goodwill [Line Items]
Servicing rights intangibles	40,800	42,100
Infrastructure Lending Segment
Goodwill [Line Items]
Goodwill	119,400	119,400
Investing and Servicing Segment
Goodwill [Line Items]
Goodwill	$ 140,400	$ 140,400