Fair Value Measurement and Fair Value of Financial Instruments - Quantitative Information for Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Quantitative information
Derivative assets - Fair value	$ 708,284	$ 484,184
Fair Value, Measurements, Recurring
Quantitative information
Derivative assets - Fair value	708,284	484,184
Fair Value, Measurements, Nonrecurring
Quantitative information
Loans held-for-investment, fair value disclosure	87,953	126,984
Level 3 | Fair Value, Measurements, Recurring
Quantitative information
Derivative assets - Fair value	357	215
Level 3 | Fair Value, Measurements, Nonrecurring
Quantitative information
Loans held-for-investment, fair value disclosure	87,953	126,984
Level 3 | Discounted cash flows | Fair Value, Measurements, Nonrecurring
Quantitative information
Loans held-for-investment, fair value disclosure	36,889	64,919
Level 3 | Fair value of collateral | Fair Value, Measurements, Nonrecurring
Quantitative information
Loans held-for-investment, fair value disclosure	19,293	38,537
Level 3 | Fair value of property | Fair Value, Measurements, Nonrecurring
Quantitative information
Loans held-for-investment, fair value disclosure	$ 31,771	$ 23,528
Discount | Level 3 | Discounted cash flows | Fair Value, Measurements, Nonrecurring | Minimum
Quantitative information
Loans held-for-investment, measurement input	4.00%	4.00%
Discount | Level 3 | Discounted cash flows | Fair Value, Measurements, Nonrecurring | Maximum
Quantitative information
Loans held-for-investment, measurement input	6.00%	15.00%
Discount | Level 3 | Discounted cash flows | Fair Value, Measurements, Nonrecurring | Weighted Average
Quantitative information
Loans held-for-investment, measurement input	4.00%	7.00%
Discount | Level 3 | Fair value of collateral | Fair Value, Measurements, Nonrecurring | Minimum
Quantitative information
Loans held-for-investment, measurement input	15.00%	15.00%
Discount | Level 3 | Fair value of collateral | Fair Value, Measurements, Nonrecurring | Maximum
Quantitative information
Loans held-for-investment, measurement input	77.00%	75.00%
Discount | Level 3 | Fair value of collateral | Fair Value, Measurements, Nonrecurring | Weighted Average
Quantitative information
Loans held-for-investment, measurement input	37.00%	41.00%
Selling cost | Level 3 | Fair value of property | Fair Value, Measurements, Nonrecurring
Quantitative information
Loans held-for-investment, measurement input	8.00%	8.00%
Selling cost | Level 3 | Fair value of property | Fair Value, Measurements, Nonrecurring | Weighted Average
Quantitative information
Loans held-for-investment, measurement input	8.00%	8.00%
Equity contracts | Fair Value, Measurements, Recurring
Quantitative information
Derivative assets - Fair value	$ 359	$ 220
Equity contracts | Level 3 | Fair Value, Measurements, Recurring
Quantitative information
Derivative assets - Fair value	$ 357	$ 215
Equity contracts | Equity volatility | Level 3 | Black-Scholes option pricing model | Fair Value, Measurements, Recurring | Minimum
Quantitative information
Measurement input	46.00%	44.00%
Equity contracts | Equity volatility | Level 3 | Black-Scholes option pricing model | Fair Value, Measurements, Recurring | Maximum
Quantitative information
Measurement input	70.00%	54.00%
Equity contracts | Equity volatility | Level 3 | Black-Scholes option pricing model | Fair Value, Measurements, Recurring | Weighted Average
Quantitative information
Measurement input	61.00%	49.00%
Equity contracts | Liquidity discount | Level 3 | Fair Value, Measurements, Recurring
Quantitative information
Measurement input	47.00%	47.00%
Equity contracts | Liquidity discount | Level 3 | Fair Value, Measurements, Recurring | Weighted Average
Quantitative information
Measurement input	47.00%	47.00%