Current Vulnerability Due to Certain Concentrations (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Concentration Risks [Abstract]
Duration of business operations in Israel		49 years
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | MUFG Bank Ltd. [Member]
Concentration Risks [Abstract]
Concentration risk percentage		16.60%
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | JPMorgan [Member]
Concentration Risks [Abstract]
Concentration risk percentage	[1]	12.60%
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | HSBC [Member]
Concentration Risks [Abstract]
Concentration risk percentage	[1]	16.00%
Geographic Concentration [Member] | Outside Of United States [Member]
Concentration Risks [Abstract]
Cash and cash equivalents and short-term investments		$ 793,660
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Germany [Member]
Concentration Risks [Abstract]
Concentration risk percentage		21.50%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Singapore [Member]
Concentration Risks [Abstract]
Concentration risk percentage		11.10%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Israel [Member]
Concentration Risks [Abstract]
Concentration risk percentage		13.50%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | United States [Member]
Concentration Risks [Abstract]
Concentration risk percentage		20.20%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | The Republic of China (Taiwan) [Member]
Concentration Risks [Abstract]
Concentration risk percentage		5.90%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | People's Republic Of China [Member]
Concentration Risks [Abstract]
Concentration risk percentage		17.90%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Malaysia
Concentration Risks [Abstract]
Concentration risk percentage		3.30%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other Asia [Member]
Concentration Risks [Abstract]
Concentration risk percentage		3.40%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other Europe [Member]
Concentration Risks [Abstract]
Concentration risk percentage		1.70%
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other [Member]
Concentration Risks [Abstract]
Concentration risk percentage		1.50%
Geographic Concentration [Member] | Revenue [Member] | Outside Of United States [Member]
Concentration Risks [Abstract]
Concentration risk percentage		73.00%
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		19.40%	15.90%

[1] Participant in Credit Facility