Current Vulnerability Due to Certain Concentrations (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Concentration Risks [Abstract]
Duration of business operations in Israel		50 years
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Bank of China [Member]
Concentration Risks [Abstract]
Concentration risk percentage		10.80%
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | MUFG Bank Ltd. [Member]
Concentration Risks [Abstract]
Concentration risk percentage		20.10%
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | JPMorgan [Member]
Concentration Risks [Abstract]
Concentration risk percentage	[1]	18.70%
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | HSBC [Member]
Concentration Risks [Abstract]
Concentration risk percentage	[1]	12.90%
Geographic Concentration [Member] | Outside Of United States [Member]
Concentration Risks [Abstract]
Cash and cash equivalents and short-term investments		$ 752,662
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Germany [Member]
Concentration Risks [Abstract]
Concentration risk percentage		17.90%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Singapore [Member]
Concentration Risks [Abstract]
Concentration risk percentage		21.20%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Israel [Member]
Concentration Risks [Abstract]
Concentration risk percentage		14.90%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | United States [Member]
Concentration Risks [Abstract]
Concentration risk percentage		13.50%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | The Republic of China (Taiwan) [Member]
Concentration Risks [Abstract]
Concentration risk percentage		8.40%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | People's Republic Of China [Member]
Concentration Risks [Abstract]
Concentration risk percentage		12.50%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other Asia [Member]
Concentration Risks [Abstract]
Concentration risk percentage		7.20%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other Europe [Member]
Concentration Risks [Abstract]
Concentration risk percentage		3.20%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other [Member]
Concentration Risks [Abstract]
Concentration risk percentage		1.20%
Geographic Concentration [Member] | Revenue [Member] | Outside Of United States [Member]
Concentration Risks [Abstract]
Concentration risk percentage		75.00%
Customer Concentration Risk [Member] | Revenue [Member]
Concentration Risks [Abstract]
Concentration risk percentage		10.00%	10.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risks [Abstract]
Concentration risk percentage		17.20%	19.40%

[1] Participant in Credit Facility