Earnings Per Share

We have outstanding stock options, unvested restricted common shares, Series A Preferred Stock, and Series A-4 Preferred Stock, and our Operating Partnership has: outstanding common OP units; Series A-1 preferred OP units; Series A-3 preferred OP units; Series A-4 preferred OP units; Series C preferred OP units; and Aspen preferred OP Units, which, if converted or exercised, may impact dilution.

Computations of basic and diluted earnings / (loss) per share were as follows (in thousands, except per share data):



	Three Months Ended September 30,						Nine Months Ended September 30,
Numerator	2017			2016			2017			2016
Net income attributable to common stockholders	$	24,115		$	18,897		$	57,583		$	18,969
Allocation to restricted stock awards	(189		)	(135		)	(461		)	(22		)
Basic earnings: Net income attributable to common stockholders after allocation	23,926			18,762			57,122			18,947
Allocation to restricted stock awards	189			135			461			22
Diluted earnings: Net income attributable to common stockholders after allocation	$	24,115		$	18,897		$	57,583		$	18,969

Denominator
Weighted average common shares outstanding	78,369			68,655			75,234			63,716
Add: dilutive stock options	2			8			2			10
Add: dilutive restricted stock	437			406			610			420
Diluted weighted average common shares and securities	78,808			69,069			75,846			64,146
Earnings per share available to common stockholders after allocation:
Basic	$	0.31		$	0.27		$	0.76		$	0.30
Diluted	$	0.31		$	0.27		$	0.76		$	0.30

We have excluded certain securities from the computation of diluted earnings per share because the inclusion of these securities would have been anti-dilutive for the periods presented. The following table presents the outstanding securities that were excluded from the computation of diluted earnings per share as of September 30, 2017 and 2016 (in thousands):



	As of September 30,
	2017	2016
Common OP units	2,757	2,838
Series A-1 preferred OP units	349	376
Series A-3 preferred OP units	40	40
Series A-4 preferred OP units	425	743
Series A-4 preferred stock	1,085	1,682
Series C preferred OP units	316	333
Aspen preferred OP units	1,284	1,284
Total securities	6,256	7,296