CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Product licenses		$ 21,553	$ 29,632	$ 61,683	$ 75,490
Subscription services		7,725	7,639	23,843	22,775
Total product licenses and subscription services		29,278	37,271	85,526	98,265
Product support		72,886	72,460	214,142	212,408
Other services		23,048	20,165	66,730	61,380
Total revenues		125,212	129,896	366,398	372,053
Cost of revenues:
Product licenses		1,763	2,370	5,182	6,828
Subscription services		3,592	3,219	10,031	9,667
Total product licenses and subscription services		5,355	5,589	15,213	16,495
Product support		4,218	3,959	13,094	10,919
Other services		14,816	13,387	43,589	42,445
Total cost of revenues		24,389	22,935	71,896	69,859
Gross profit		100,823	106,961	294,502	302,194
Operating expenses:
Sales and marketing		41,806	39,169	122,635	113,448
Research and development		19,360	18,069	57,347	54,804
General and administrative		19,082	19,703	58,921	63,014
Restructuring costs		0	12	0	45
Total operating expenses		80,248	76,953	238,903	231,311
Income from operations		20,575	30,008	55,599	70,883
Interest income, net		1,449	507	3,449	1,449
Other expense, net		(1,903)	(473)	(6,377)	(386)
Income before income taxes		20,121	30,042	52,671	71,946
Provision for income taxes		2,197	3,414	8,804	12,162
Net income		$ 17,924	$ 26,628	$ 43,867	$ 59,784
Basic earnings per share	[1]	$ 1.57	$ 2.33	$ 3.83	$ 5.23
Weighted average shares outstanding used in computing basic earnings per share		11,447	11,431	11,443	11,422
Diluted earnings per share	[1]	$ 1.56	$ 2.31	$ 3.79	$ 5.20
Weighted average shares outstanding used in computing diluted earnings per share		11,499	11,521	11,567	11,503

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