CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Product licenses		$ 29,632	$ 27,511	$ 75,490	$ 77,634
Subscription services		7,639	6,546	22,775	20,285
Total product licenses and subscription services		37,271	34,057	98,265	97,919
Product support		72,460	71,392	212,408	211,444
Other services		20,165	24,087	61,380	76,984
Total revenues		129,896	129,536	372,053	386,347
Cost of revenues:
Product licenses		2,370	2,680	6,828	5,895
Subscription services		3,219	3,075	9,667	9,800
Total product licenses and subscription services		5,589	5,755	16,495	15,695
Product support		3,959	3,174	10,919	9,734
Other services		13,387	15,755	42,445	52,265
Total cost of revenues		22,935	24,684	69,859	77,694
Gross profit		106,961	104,852	302,194	308,653
Operating expenses:
Sales and marketing		39,169	36,403	113,448	109,142
Research and development		18,069	17,789	54,804	48,051
General and administrative		19,703	19,843	63,014	63,071
Restructuring costs		12	86	45	261
Total operating expenses		76,953	74,121	231,311	220,525
Income from operations		30,008	30,731	70,883	88,128
Interest income, net		507	116	1,449	129
Other (expense) income, net		(473)	766	(386)	2,601
Income before income taxes		30,042	31,613	71,946	90,858
Provision for income taxes		3,414	7,720	12,162	24,038
Net income		$ 26,628	$ 23,893	$ 59,784	$ 66,820
Basic earnings per share	[1]	$ 2.33	$ 2.10	$ 5.23	$ 5.89
Weighted average shares outstanding used in computing basic earnings per share		11,431	11,365	11,422	11,345
Diluted earnings per share	[1]	$ 2.31	$ 2.06	$ 5.20	$ 5.80
Weighted average shares outstanding used in computing diluted earnings per share		11,521	11,589	11,503	11,521

[1] Basic and fully diluted earnings per share for class A and class B common stock are the same.