Business Combinations (Tables)

12 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Schedule of Unaudited Pro Forma Financial Information

The following amounts are in thousands, except per share amounts:

	2015
Total revenues	$	2,358,643
Net earnings attributable to common stockholders	$	866,753
Net earnings per share attributable to common stockholders – Basic	$	1.66
Net earnings per share attributable to common stockholders – Diluted	$	1.65