Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Revenue	$ 1,045,040	$ 1,182,786	$ 2,078,040	$ 2,230,712
Investment income	1,283	891	2,421	1,752
Costs and expenses:
Purchased transportation	799,371	916,940	1,591,126	1,727,237
Commissions to agents	87,623	94,399	173,294	176,524
Other operating costs, net of gains on asset sales/dispositions	9,861	7,606	18,100	15,210
Insurance and claims	16,286	21,539	31,279	38,899
Selling, general and administrative	41,297	48,998	82,565	94,249
Depreciation and amortization	11,034	10,769	22,350	21,766
Total costs and expenses	965,472	1,100,251	1,918,714	2,073,885
Operating income	80,851	83,426	161,747	158,579
Interest and debt expense	709	839	1,514	1,639
Income before income taxes	80,142	82,587	160,233	156,940
Income taxes	19,042	20,095	35,833	36,975
Net income	61,100	62,492	124,400	119,965
Less: Net loss attributable to noncontrolling interest	0	(31)	(17)	(75)
Net income attributable to Landstar System, Inc. and subsidiary	$ 61,100	$ 62,523	$ 124,417	$ 120,040
Earnings per common share attributable to Landstar System, Inc. and subsidiary	$ 1.53	$ 1.51	$ 3.11	$ 2.88
Diluted earnings per share attributable to Landstar System, Inc. and subsidiary	$ 1.53	$ 1.51	$ 3.11	$ 2.87
Average number of shares outstanding:
Earnings per common share	39,945,000	41,450,000	40,053,000	41,744,000
Diluted earnings per share	39,945,000	41,491,000	40,053,000	41,795,000
Dividends per common share	$ 0.165	$ 0.150	$ 0.330	$ 0.300