Fair Value Measurements Equity Securities Without Readily Determinable Fair Values (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2020	$ 13,000
Carrying value changes	0	$ 0	$ 13,444
Equity Securities without Readily Determinable Fair Value, Additions, Annual Amount	264
Equity Securities without Readily Determinable Fair Value, Sales, Annual Amount	(33)
Equity Securities without Readily Determinable Fair Value, Donations, Annual Amount	(134)
Equity Securities without Readily Determinable Fair Value, Amount	14,000	13,000
Fair Value, Inputs, Level 3
Equity Securities Without Readily Determinable Fair Value Amount [Roll Forward]
Carrying value as of December 31, 2020	13,444
Equity Securities without Readily Determinable Fair Value, Amount	13,542	$ 13,444
Cumulative upward carrying value changes between January 1, 2018 and December 31, 2021	13,444
Cumulative downward carrying value changes between January 1, 2018 and December 31, 2021	$ 0