Fair Value Measurement - Loans Held (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total	$ 252,477	$ 78,460
Fair Value, Inputs, Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held-for-sale	142,685	60,232
Loans held-for-investment	109,792	18,228
Total	$ 252,477	$ 78,460