Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016
Net income	$ 37,510	$ 32,314	$ 69,893	$ 61,498
Other comprehensive income:
Unrealized holding gains on available-for-sale investments, net of tax expenses of $89, $217, $54 and $117	101	215	165	397
Foreign currency translation gains	448	254	585	837
Other comprehensive income	549	469	750	1,234
Comprehensive income	$ 38,059	$ 32,783	$ 70,643	$ 62,732