CONDENSED CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Total revenues	$ 213,055	$ 199,195	$ 627,792	$ 584,378
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	109,052	99,717	319,640	295,085
Other operating expenses:
Research and development	31,477	30,324	91,809	85,103
Selling, general and administrative	39,243	35,816	120,515	109,981
Depreciation	4,831	3,344	13,293	9,975
Restructuring and reorganization charges	2,799	1,618	7,028	4,597
Total operating expenses	187,402	170,819	552,285	504,741
Operating income	25,653	28,376	75,507	79,637
Other income (expense):
Interest expense	(4,456)	(4,186)	(13,202)	(12,638)
Amortization of original issue discount	(671)	(634)	(1,984)	(2,147)
Interest and investment income, net	675	800	2,256	2,310
Loss on extinguishment of debt			(810)
Other, net	(709)	(970)	(347)	(1,123)
Total other	(5,161)	(4,990)	(14,087)	(13,598)
Income before income taxes	20,492	23,386	61,420	66,039
Income tax provision	(4,391)	(8,806)	(16,188)	(19,641)
Net income	$ 16,101	$ 14,580	$ 45,232	$ 46,398
Weighted-average shares outstanding:
Basic	32,507	32,561	32,541	32,383
Diluted	32,806	32,901	32,939	32,825
Earnings per common share:
Basic	$ 0.50	$ 0.45	$ 1.39	$ 1.43
Diluted	$ 0.49	$ 0.44	$ 1.37	$ 1.41
Cloud and Related Solutions
Revenues:
Total revenues	$ 186,473	$ 164,789	$ 551,390	$ 481,445
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	95,092	79,856	277,212	233,194
Software and Services
Revenues:
Total revenues	14,283	15,726	39,573	46,680
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	8,669	9,725	25,816	31,404
Maintenance
Revenues:
Total revenues	12,299	18,680	36,829	56,253
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	$ 5,291	$ 10,136	$ 16,612	$ 30,487