Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Reconciliation of Average Number of Common Shares Outstanding to Average Number of Diluted Shares Outstanding

The following table provides a reconciliation of the average number of common shares outstanding used to calculate earnings per common share attributable to Landstar System, Inc. and subsidiary to the average number of common shares and common share equivalents outstanding used to calculate diluted earnings per share attributable to Landstar System, Inc. and subsidiary (in thousands):

	Twenty Six Weeks Ended				Thirteen Weeks Ended
	June 30, 2018		July 1, 2017		June 30, 2018		July 1, 2017
Average number of common shares outstanding		41,744		41,907		41,450		41,935
Incremental shares from assumed exercises of stock options		51		97		41		75
Average number of common shares and common share equivalents outstanding		41,795		42,004		41,491		42,010