Condensed Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 18,785	$ (25,430)
Other comprehensive income (loss):
Net unrealized gains (losses) on available-for-sale debt securities, net of tax	(274)	178
Other comprehensive income (loss)	(274)	178
Comprehensive income (loss)	18,511	(25,252)
Less: comprehensive income (loss) attributable to noncontrolling interest	(551)	(347)
Comprehensive income (loss) attributable to Xperi	$ 19,062	$ (24,905)