Commitments, Contingencies, and Concentrations (Geographic Concentrations) (Details)	Dec. 31, 2019	Dec. 31, 2018
Cash and Cash Equivalents by Region [Line Items]
Percentage of cash and cash equivalents by region	100.00%	100.00%
Asia
Cash and Cash Equivalents by Region [Line Items]
Percentage of cash and cash equivalents by region	23.00%	28.00%
United States
Cash and Cash Equivalents by Region [Line Items]
Percentage of cash and cash equivalents by region	7.00%	7.00%
Israel
Cash and Cash Equivalents by Region [Line Items]
Percentage of cash and cash equivalents by region	28.00%	35.00%
Europe
Cash and Cash Equivalents by Region [Line Items]
Percentage of cash and cash equivalents by region	14.00%	13.00%
United Kingdom
Cash and Cash Equivalents by Region [Line Items]
Percentage of cash and cash equivalents by region	17.00%	12.00%
Canada
Cash and Cash Equivalents by Region [Line Items]
Percentage of cash and cash equivalents by region	11.00%	5.00%