Earnings Per Share

12 Months Ended

Dec. 31, 2016

We have outstanding stock options, unvested restricted 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 per share were as follows (in thousands, except per share data):



	Year Ended December 31,
Numerator	2016			2015			2014
Net income attributable to common stockholders	$	17,369		$	137,325		$	22,376
Allocation of income to restricted stock awards	115			(1,757		)	(127		)
Net income attributable to common stockholders after allocation	$	17,484		$	135,568		$	22,249
Allocation of income to restricted stock awards	(115		)	—			127
Amounts attributable to Series A-4 Preferred Stock	—			—			76
Diluted earnings: net income attributable to common stockholders after allocation	$	17,369		$	135,568		$	22,452
Denominator
Weighted average common shares outstanding	65,856			53,686			41,337
Add: dilutive stock options	8			16			16
Add: dilutive restricted stock	457			—			237
Add: dilutive Series A-4 Preferred Stock	—			—			215
Diluted weighted average common shares and securities	66,321			53,702			41,805
Earnings per share available to common stockholders after allocation:
Basic	$	0.27		$	2.53		$	0.54
Diluted	$	0.26		$	2.52		$	0.54

We exclude 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 for the years ended December 31, 2016, 2015 and 2014 (amounts in thousands):



	Year Ended December 31,
	2016	2015	2014
Restricted Stock	—	813	—
Common OP units	2,759	2,863	2,561
Series A-1 preferred OP units	367	388	429
Series A-3 preferred OP units	40	40	40
Series A-4 preferred OP units	634	755	669
Series A-4 Preferred Stock	1,682	2,067	—
Series C preferred OP units	333	340	—
Aspen preferred OP units	1,284	1,284	1,284
Total securities	7,099	8,550	4,983