Stockholders' Equity Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Stockholders' Equity Note [Abstract]

Schedule of Share Repurchases

Our repurchase activity is as follows:

	Nine months ended   September 30,										Inception to date
	2018					2017
Program	Shares	Total $		$ per share		Shares	Total $		$ per share		Shares	Total $		$ per share
Open market	116,289	$	3,839,766	$	33.02	8,676	$	283,654	$	32.69	3,959,784	$	65,071,881	$	16.43
401(k)	373,129	13,660,954		36.61		364,839	12,706,655		34.83		6,923,152	95,729,759		13.83
Directors and employees	24,457	859,696		35.15		33,845	1,193,337		35.26		1,943,967	18,137,729		9.33
Total	513,875	$	18,360,416	$	35.73	407,360	$	14,183,646	$	34.82	12,826,903	$	178,939,369	$	13.95

Schedule of Dividends Payable

Our recent dividends are as follows:

Declaration Date	Record Date	Payment Date	Dividend per Share
May 16, 2017	June 9, 2017	July 7, 2017	$	0.13
November 7, 2017	November 30, 2017	December 21, 2017	$	0.13
May 18, 2018	June 8, 2018	July 6, 2018	$	0.16