Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Net income attributable to Landstar System, Inc. and subsidiary	$ 61,886	$ 53,255	$ 127,035	$ 177,672
Other comprehensive (loss) income:
Unrealized holding gains on available-for-sale investments, net of tax expense of $413, $577, $75 and $83	273	307	1,510	2,112
Foreign currency translation (losses) gains	908	(1,083)	(5,262)	42
Other comprehensive (loss) income	1,181	(776)	(3,752)	2,154
Comprehensive income attributable to Landstar System, Inc. and subsidiary	$ 63,067	$ 52,479	$ 123,283	$ 179,826