Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Common Stock Share Repurchase Programs Authorized by Board of Directors from Time to Time and Related Repurchase Activity and Available Authorized

The following table outlines the common stock share repurchase programs authorized by the Company’s board of directors from time to time, and the related repurchase activity and available authorization as of September 30, 2018.

Effective date	Expiration date	Amount authorized		Cost of repurchases		Authorization available
November 4, 2015	November 4, 2017	$	150,000	$	150,000	$	—
September 6, 2016	December 31, 2017	$	250,000	$	250,000	$	—
February 20, 2017	December 31, 2018	$	250,000	$	250,000	$	—
February 20, 2018	December 31, 2019	$	350,000	$	66,707	$	283,293

Schedule of Share Repurchase Activity under Share Repurchase Programs

Share repurchase activity under the Company’s repurchase programs for the periods indicated was as follows (total cost in thousands):

	Thirteen Weeks Ended				Thirty-nine Weeks Ended
	September 30, 2018		October 1, 2017		September 30, 2018		October 1, 2017
Number of common shares acquired		719,004		3,249,204		8,411,575		9,136,468
Average price per common share acquired	$	21.29	$	22.16	$	22.98	$	21.01
Total cost of common shares acquired	$	15,307	$	72,000	$	193,307	$	192,000