Concentration of Risk - Regional Concentration Based on Number of Customers (Details) - Number Of Customers Geographic Area - Geographic Region - customer	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Concentration Risk [Line Items]
Number of Customers	118	112
% of Total	100.00%	100.00%
Europe
Concentration Risk [Line Items]
Number of Customers	50	48
% of Total	42.50%	42.90%
Asia (excluding China)
Concentration Risk [Line Items]
Number of Customers	22	20
% of Total	18.60%	17.80%
The Middle East and Africa
Concentration Risk [Line Items]
Number of Customers	14	14
% of Total	11.90%	12.50%
U.S. and Canada
Concentration Risk [Line Items]
Number of Customers	13	11
% of Total	11.00%	9.80%
China
Concentration Risk [Line Items]
Number of Customers	9	9
% of Total	7.60%	8.00%
Central America, South America and Mexico
Concentration Risk [Line Items]
Number of Customers	7	7
% of Total	5.90%	6.30%
Pacific, Australia, and New Zealand
Concentration Risk [Line Items]
Number of Customers	3	3
% of Total	2.50%	2.70%