Balance Sheet Components (Schedule of Amortized Cost and Estimated Fair Market Value of Investments Classified as Available-for-Sale Excluding Cash Equivalents) (Parentheticals) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-Sale [Line Items]
Short-term investments	$ 80,925	$ 7,744
Other non-current assets	97,793	76,350
Convertible Debt
Debt Securities, Available-for-Sale [Line Items]
Short-term investments	173,000	173,000
Other non-current assets	$ 173,000	$ 346,000