Investment Securities (Equity Securities without Readily Determinable Fair Value) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Equity Securities without Readily Determinable Fair Value [Line Items]
Equity Securities without Readily Determinable Fair Value, Amount	$ 65,780	$ 65,780	$ 6,988	$ 6,978
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount	178,227	178,227
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount	0	0
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount	0	0
Sales of Equity Securities Without Readily Determinable Fair Value	$ (119,435)	$ (119,425)