Net Income per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Summary of the net income allocated to common shares and the basic and diluted shares used in the net income per share computations

The following table summarizes the net income allocated to common shares and the basic and diluted shares used in the net income per share computations:

	Three Months Ended   March 31,
	2018			2017
	(in thousands)
Net income	$	49,991		$	35,628
Less distributed and undistributed earnings allocated to participating securities	(585		)	(781		)
Net income allocated to common shares	$	49,406		$	34,847
Weighted average common shares outstanding	41,224			41,130
Incremental shares from assumed LTIP awards and conversions of common stock options	493			202
Adjusted weighted average common shares outstanding	41,717			41,332