Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

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):

	Thirty Nine Weeks Ended				Thirteen Weeks Ended
	September 30, 2017		September 24, 2016		September 30, 2017		September 24, 2016
Average number of common shares outstanding		41,924		42,223		41,957		42,039
Incremental shares from assumed exercises of stock options		89		118		71		131
Average number of common shares and common share equivalents outstanding		42,013		42,341		42,028		42,170