Common Stock and Other Equity Related Transactions (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Schedule of Common Stock Outstanding Roll Forward

The following table presents the changes in our outstanding common stock for the years ended December 31, 2016, 2015 and 2014 (excluding OP Units of 7,170,000, 7,207,678, and 7,231,967 outstanding at December 31, 2016, 2015 and 2014, respectively):

	Years Ended December 31,
	2016		2015		2014
Shares outstanding at January 1,	84,253,065		83,879,779		83,313,677
Common stock issued through the At-The-Market Equity Offering Program	683,548		—		—
Common stock issued through conversion of OP Units	37,678		24,289		435,756
Common stock issued through exercise of options	440,000		220,000		—
Common stock issued through stock grants	133,726		158,013		186,666
Common stock issued through ESPP and Dividend Reinvestment Plan	17,373		20,134		31,203
Common stock repurchased and retired	(36,004	)	(49,150	)	(87,523	)
Shares outstanding at December 31,	85,529,386		84,253,065		83,879,779

Dividends Declared

The following regular quarterly distributions have been declared and paid to common stockholders and common OP Unit non-controlling interests since January 1, 2014:

Distribution Amount Per Share	For the Quarter Ending	Stockholder Record Date	Payment Date
$0.3250	March 31, 2014	March 28, 2014	April 11, 2014
$0.3250	June 30, 2014	June 27, 2014	July 11, 2014
$0.3250	September 30, 2014	September 26, 2014	October 10, 2014
$0.3250	December 31, 2014	December 26, 2014	January 9, 2015
$0.3750	March 31, 2015	March 27, 2015	April 10, 2015
$0.3750	June 30, 2015	June 26, 2015	July 10, 2015
$0.3750	September 30, 2015	September 25, 2015	October 9, 2015
$0.3750	December 31, 2015	December 28, 2015	January 8, 2016
$0.4250	March 31, 2016	March 25, 2016	April 8, 2016
$0.4250	June 30, 2016	June 24, 2016	July 8, 2016
$0.4250	September 30, 2016	September 30, 2016	October 14, 2016
$0.4250	December 31, 2016	December 30, 2016	January 13, 2017

Schedule of Stock by Class

The following table presents the shares that were issued under the ATM equity offering program during the year endedDecember 31, 2016 (amounts in thousands, except share data):

	Year Ended December 31, 2016
Shares of Common Stock sold	683,548
Weighted average price	$	73.15
Total gross proceeds	$	50,000
Commissions paid to sales agents	$	657