(16) Selected Quarterly Financial Data (Unaudited)

The following tables contain unaudited Statement of Operations information for each quarter of 2017 and 2016. During the fourth quarter of 2017, the Company estimated and recorded a one-time tax provision of $44.0 million as a result of the Tax Act. This tax provision is comprised of a $40.3 million Transition Tax and a $3.7 million charge related to the re-measurement of net deferred tax assets arising from the new lower corporate tax rate effected by the Tax Act. During the fourth quarter of 2016, the Company reversed the accrual for potential future payments in connection with the departure from the Company of two executives in connection with an executive management reorganization in January 2016, which resulted in a $3.4 million increase in net income. The operating results for any quarter are not necessarily indicative of results for any future period.

	Quarter Ended
	March 31		June 30		September 30		December 31			Year
	(in thousands, except per share data)
2017
Revenues	$	120,576	$	120,610	$	125,212	$	138,145		$	504,543
Gross profit	$	97,444	$	96,235	$	100,823	$	113,392		$	407,894
Net (loss) income	$	14,867	$	11,076	$	17,924	$	(26,224	)	$	17,643
Earnings (loss) per share:⁽¹⁾
Basic	$	1.30	$	0.97	$	1.57	$	(2.29	)	$	1.54
Diluted	$	1.28	$	0.96	$	1.56	$	(2.29	)	$	1.53

	Quarter Ended
	March 31		June 30		September 30		December 31		Year
	(in thousands, except per share data)
2016
Revenues	$	119,015	$	123,142	$	129,896	$	140,108	$	512,161
Gross profit	$	96,192	$	99,041	$	106,961	$	116,820	$	419,014
Net income	$	14,272	$	18,884	$	26,628	$	31,124	$	90,908
Earnings per share:⁽¹⁾
Basic	$	1.25	$	1.65	$	2.33	$	2.72	$	7.96
Diluted	$	1.24	$	1.64	$	2.31	$	2.69	$	7.89

(1)	The sum of the basic and diluted (loss) earnings per share for the four quarters may differ from annual earnings per share as the weighted-average shares outstanding are computed independently for each of the quarters presented.