Balance Sheet Components (Schedule of Amortized Cost and Estimated Fair Market Value of Investments Classified as Available-for-Sale Excluding Cash Equivalents) (Details) - USD ($) $ in Thousands		Oct. 01, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost		$ 88,937	$ 74,472
Unrealized Gains		0	0
Unrealized Losses		(71)	(320)
Estimated Fair Value		88,866	74,152
U.S. Treasury Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost		88,764	74,120
Unrealized Gains		0	0
Unrealized Losses		(71)	(320)
Estimated Fair Value		88,693	73,800
Convertible debt securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	[1]	173	346
Unrealized Gains	[1]	0	0
Unrealized Losses	[1]	0	0
Estimated Fair Value	[1]	$ 173	346
Certificates of Deposit
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost			6
Unrealized Gains			0
Unrealized Losses			0
Estimated Fair Value			$ 6

[1] On the Company’s unaudited condensed consolidated balance sheets, $173,000 included in Short-term investments as of October 1, 2023, and December 31, 2022, respectively, and $173,000 included in Other non-current assets as of December 31, 2022.