Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Net income attributable to Landstar System, Inc. and subsidiary	$ 63,317	$ 57,517
Other comprehensive income (loss):
Unrealized holding gains (losses) on available-for-sale investments, net of tax expense (benefit) of $272 and $(191)	995	(730)
Foreign currency translation gains	554	341
Other comprehensive income (loss)	1,549	(389)
Comprehensive income attributable to Landstar System, Inc. and subsidiary	$ 64,866	$ 57,128