Offsetting Assets and Liabilities - Offsetting Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Securities Borrowed [Abstract]
Gross Amounts of Recognized Assets	$ 69,831	$ 19,899
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	69,831	19,899
Financial Instruments Collateral	(59,671)	(18,327)
Cash Collateral Received	0	0
Net Amount	10,160	1,572
Derivative Asset [Abstract]
Cash Collateral Received	(9,200)	(2,900)
Derivatives
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	27,347	15,422
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	27,347	15,422
Financial Instruments Collateral	0	0
Cash Collateral Received	(9,151)	(2,872)
Net Amount	18,196	12,550
Exchange-traded options | Long
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	59	1,893
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	59	1,893
Financial Instruments Collateral	0	0
Cash Collateral Received	0	0
Net Amount	$ 59	$ 1,893