Stockholders' Equity Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2017

Stockholders' Equity Note [Abstract]

Schedule of Share Repurchases

Our repurchase activity is as follows:

	Six Months Ended   June 30,										Inception to date
	2017					2016
Program	Shares	Total $		$ per share		Shares	Total $		$ per share		Shares	Total $		$ per share
Open market	8,676	$	283,654	$	32.69	10,230	$	265,402	$	25.94	3,843,495	$	61,232,115	$	15.93
401(k)	258,051	9,083,606		35.20		274,147	6,967,393		25.41		6,340,494	74,816,326		11.80
Directors and employees	30,158	1,066,450		35.36		17,128	440,828		25.74		1,903,790	16,730,059		8.79
Total	296,885	$	10,433,710	$	35.14	301,505	$	7,673,623	$	25.45	12,087,779	$	152,778,500	$	12.64

Schedule of Dividends Payable

Our recent dividends are as follows:

Declaration Date	Record Date	Payment Date	Dividend per Share
May 24, 2016	June 10, 2016	July 1, 2016	$	0.11
November 9, 2016	December 2, 2016	December 23, 2016	$	0.13
May 16, 2017	June 9, 2017	July 7, 2017	$	0.13