Disclosures About Offsetting Assets and Liabilities (Financial Assets and Derivative Assets that are Subject to Offset) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Offsetting Assets [Line Items]
Gross amounts of recognized assets, Securities borrowing	$ 260,586	$ 313,131
Net amounts presented in the Statement of Financial Condition, Securities borrowing	260,586	313,131
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities borrowing	(40,259)	(46,183)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities borrowing	(208,720)	(244,578)
Securities borrowed, Net amount	11,607	22,370
Gross amounts of recognized assets, Reverse repurchase agreements	579,866	217,930
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell	579,866	217,930
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell	(52,413)	(17,992)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities purchased under agreements to resell	(525,843)	(199,110)
Securities purchased under agreements to resell, Net amount	1,610	828
Gross amounts of recognized assets	892,581	531,061
Net amounts presented in the Statements of Financial Condition	892,581	531,061
Gross amounts not offset in the Statement of Financial Position	(117,821)	(64,175)
Gross amounts not offset in the Statement of Financial Position, Collateral received	(761,543)	(443,688)
Net amount	13,217	$ 23,198
Interest Rate Contracts [Member]
Offsetting Assets [Line Items]
Gross amounts of recognized assets	52,129
Net amounts presented in the Statements of Financial Condition	52,129
Gross amounts not offset in the Statement of Financial Position	(25,149)
Gross amounts not offset in the Statement of Financial Position, Collateral received	$ (26,980)