Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

15. Quarterly Financial Data (Unaudited)

	Quarter ended
	March 31			June 30			Sept. 30		Dec. 31
	(in thousands, except per share amounts)
2016
Revenues	$	802,408		$	707,332		$	702,538	$	729,069
Gross profit	150,016			113,259			117,796		110,539
Operating income	53,043			16,023			22,773		14,467
Net income	32,693			9,713			14,065		9,520
Basic net income per share	1.53			0.45			0.66		0.45
Diluted net income per share	1.53			0.45			0.66		0.45
2015
Revenues	$	699,479		$	627,838		$	626,286	$	650,011
Gross profit	129,860			104,219			106,743		97,045
Operating income	23,520		(1)	12,217		(2)	19,936		10,026		(3)
Net income	13,787			7,314			11,950		6,339
Basic net income per share	0.54			0.29			0.48		0.26
Diluted net income per share	0.54			0.29			0.48		0.26

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⁽¹⁾  Includes non-cash impairment and other charges in the first quarter of 2015 of $9.8 million. Please read Note 7, “Impairment Charges and Other,” for additional information.

⁽²⁾  Includes non-cash impairment and other charges in the second quarter of 2015 of $1.3 million. Please read Note 7, “Impairment Charges and Other,” for additional information.

⁽³⁾  Includes a reduction to non-cash impairment and other charges in the fourth quarter of 2015 of $0.6 million. Please read Note 7, “Impairment Charges and Other,” for additional information.