QUARTERLY SUPPLEMENTAL FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Supplemental Financial Data (Unaudited)

Presented below is a summary of the unaudited quarterly financial information for the year ended December 31, 2017 (in thousands, except per share data):

	Three Months Ended
	March 31, 2017		June 30, 2017 (1)		September 30, 2017		December 31, 2017 (1) (2)		Total
Revenue	$	55,566	$	102,513	$	61,683	$	115,867	$	335,629
Net income	$	10,365	$	47,187	$	13,520	$	32,813	$	103,885
Net income per common share:
Basic	$	0.22	$	0.99	$	0.28	$	0.70	$	2.19
Diluted	$	0.22	$	0.99	$	0.28	$	0.69	$	2.18

(1)	The Company receives significant license revenue in the second and fourth quarters; see Note 2 for further details.

(2)	The enactment of the Tax Cuts and Jobs Act in December 2017 resulted in a one-time charge of $11.5 million in the fourth quarter; see Note 18 for further details.

Presented below is a summary of the unaudited quarterly financial information for the year ended December 31, 2016 (in thousands, except per share data):

	Three Months Ended
	March 31, 2016		June 30, 2016 (1)		September 30, 2016			December 31, 2016 (1)		Total
Revenue	$	29,703	$	64,392	$	30,214		$	74,577	$	198,886
Net income (loss)	$	1,949	$	21,802	$	(1,500	)	$	25,819	$	48,070

Basic	$	0.04	$	0.46	$	(0.03	)	$	0.55	$	1.02
Diluted	$	0.04	$	0.46	$	(0.03	)	$	0.55	$	1.02

(1)	The Company receives significant license revenue in the second and fourth quarters; see Note 2 for further details.