CONDENSED CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total revenues	$ 213,033	$ 192,713	$ 414,737	$ 385,183
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	109,492	97,660	210,588	195,368
Other operating expenses:
Research and development	30,953	27,939	60,332	54,779
Selling, general and administrative	40,624	36,819	81,272	74,165
Depreciation	4,548	3,316	8,462	6,631
Restructuring and reorganization charges	3,329	2,731	4,229	2,979
Total operating expenses	188,946	168,465	364,883	333,922
Operating income	24,087	24,248	49,854	51,261
Other income (expense):
Interest expense	(4,480)	(4,146)	(8,746)	(8,452)
Amortization of original issue discount	(661)	(625)	(1,313)	(1,513)
Interest and investment income, net	770	704	1,581	1,510
Loss on extinguishment of debt			(810)
Other, net	1,008	122	362	(153)
Total other	(3,363)	(3,945)	(8,926)	(8,608)
Income before income taxes	20,724	20,303	40,928	42,653
Income tax provision	(5,607)	(8,722)	(11,797)	(10,835)
Net income	$ 15,117	$ 11,581	$ 29,131	$ 31,818
Weighted-average shares outstanding:
Basic	32,589	32,572	32,558	32,294
Diluted	32,908	32,996	33,005	32,795
Earnings per common share:
Basic	$ 0.46	$ 0.36	$ 0.89	$ 0.99
Diluted	$ 0.46	$ 0.35	$ 0.88	$ 0.97
Cloud and Related Solutions
Revenues:
Total revenues	$ 187,401	$ 157,879	$ 364,917	$ 316,656
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	95,212	77,286	182,120	153,338
Software and Services
Revenues:
Total revenues	13,331	15,896	25,290	30,954
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	8,614	10,405	17,147	21,679
Maintenance
Revenues:
Total revenues	12,301	18,938	24,530	37,573
Cost of revenues (exclusive of depreciation, shown separately below):
Total cost of revenues	$ 5,666	$ 9,969	$ 11,321	$ 20,351