Earnings Per Share

12 Months Ended

Dec. 31, 2019

Basic earnings per share is calculated by dividing net income attributable to common stockholders by the weighted average shares outstanding. Diluted earnings per share is calculated using the treasury stock method by dividing net income attributable to common stockholders by the total weighted average shares of common stock outstanding and common stock equivalents. Common stock equivalents are comprised of dilutive potential shares from restricted stock unit awards and are excluded from the computation if their effect is anti-dilutive.

There were no anti-dilutive common stock equivalents for either the years ended December 31, 2019, 2018 or 2017.

The following table reconciles income and share data used in the basic and diluted earnings per share computations:



	Years Ended December 31,
(in thousands, except per share data)	2019			2018		2017
Net income	$	146,984		$	109,522	$	92,486
Less: Net (income) loss attributable to redeemable noncontrolling interests	(12,363		)	4,374		(547		)
Net income attributable to common stockholders	$	134,621		$	113,896	$	91,939
Basic weighted average shares outstanding	47,273			46,794		46,353
Dilutive potential shares from restricted stock units	1,024			587		626
Diluted weighted average shares outstanding	48,297			47,381		46,979

Basic earnings per share attributable to common stockholders	$	2.85		$	2.43	$	1.98
Diluted earnings per share attributable to common stockholders	$	2.79		$	2.40	$	1.96