Summary of Quarterly Financial Information (unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Information (unaudited)

Summary of Quarterly Financial Information (unaudited)

The quarterly results of operations of our company for the years ended December 31, 2017, 2016 and 2015 are as follows (amounts in thousands):

	March 31, 2017		June 30, 2017		September 30, 2017		December 31, 2017
Revenues	$	164,954	$	177,124	$	187,320	$	183,070
Operating income	$	36,666	$	51,434	$	56,781	$	50,964
Net income	$	19,145	$	31,359	$	35,489	$	32,260
Net income attributable to common stockholders	$	9,985	$	16,584	$	18,806	$	17,272
Net income per share attributable to common stockholders:
Basic and diluted	$	0.06	$	0.10	$	0.12	$	0.11
	March 31, 2016		June 30, 2016		September 30, 2016		December 31, 2016
Revenues	$	157,074	$	165,815	$	175,848	$	179,263
Operating income	$	34,114	$	44,192	$	53,586	$	52,651
Net income	$	16,705	$	24,640	$	32,897	$	33,008
Net income attributable to common stockholders	$	7,428	$	11,089	$	15,973	$	16,966
Net income per share attributable to common stockholders:
Basic and diluted	$	0.06	$	0.09	$	0.12	$	0.11
	March 31, 2015		June 30, 2015		September 30, 2015		December 31, 2015
Revenues	$	151,882	$	164,773	$	175,779	$	165,200
Operating income	$	23,757	$	45,039	$	45,343	$	37,230
Net income	$	7,888	$	26,585	$	26,085	$	19,370
Net income attributable to common stockholders	$	3,138	$	11,120	$	11,220	$	8,252
Net income per share attributable to common stockholders:
Basic and diluted	$	0.03	$	0.10	$	0.10	$	0.07