Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Consolidated Operating Results by Quarter

The table below sets forth the unaudited consolidated operating results by quarter for the years ended December 31, 2014 and 2013 (in thousands, except per share information).

	For the Three Months Ended
	March 31,		June 30,		September 30,		December 31,
2014:
Revenues	$	1,762,574	$	1,864,550	$	2,171,144	$	2,052,982
Gross profit		272,071		281,448		352,971		327,030
Net income		58,648		85,444		100,015		70,975
Net income attributable to common stock		54,408		81,082		94,648		66,576
Net income from continuing operations attributable to common stock		54,408		81,082		94,648		67,203
Earnings per share from continuing operations attributable to common stock — basic and diluted	$	0.25	$	0.37	$	0.43	$	0.30
2013:
Revenues	$	1,585,710	$	1,474,377	$	1,645,132	$	1,817,623
Gross profit		238,273		241,284		273,053		302,843
Net income		76,857		74,726		98,409		171,317
Net income attributable to common stock		72,081		70,237		92,906		166,697
Net income from continuing operations attributable to common stock		72,081		70,237		92,906		166,697
Earnings per share from continuing operations attributable to common stock — basic and diluted	$	0.34	$	0.33	$	0.43	$	0.77