Offsetting Assets and Liabilities - Offsetting Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Securities Borrowed [Abstract]
Gross Amounts of Recognized Assets	$ 73,685	$ 19,899
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	73,685	19,899
Financial Instruments Collateral	(71,951)	(18,327)
Cash Collateral Received	0	0
Net Amount	1,734	1,572
Derivative Asset [Abstract]
Cash Collateral Received	(16,000)	(2,900)
Derivatives
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	37,348	15,422
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	37,348	15,422
Financial Instruments Collateral	0	0
Cash Collateral Received		(2,872)
Net Amount	21,383	12,550
Derivatives | Long
Derivative Asset [Abstract]
Cash Collateral Received	(15,965)
Long exchange-traded options | Long
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	4,837	1,893
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	4,837	1,893
Financial Instruments Collateral	0	0
Cash Collateral Received	0	0
Net Amount	$ 4,837	$ 1,893