CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Total revenues		$ 110,584	$ 117,737	$ 222,008	$ 233,103
Cost of revenues:
Total cost of revenues		23,989	25,350	48,534	51,523
Gross profit		86,595	92,387	173,474	181,580
Operating expenses:
Sales and marketing		34,951	48,273	74,469	97,033
Research and development		25,867	27,764	51,968	55,979
General and administrative		19,449	21,180	40,781	43,784
Total operating expenses		80,267	97,217	167,218	196,796
Income (loss) from operations		6,328	(4,830)	6,256	(15,216)
Interest income, net		563	3,013	2,418	5,579
Other (expense) income, net		(1,995)	29,431	(1,561)	28,835
Income before income taxes		4,896	27,614	7,113	19,198
Provision for income taxes		1,509	7,220	3,069	6,710
Net income		$ 3,387	$ 20,394	$ 4,044	$ 12,488
Basic earnings per share	[1]	$ 0.35	$ 1.99	$ 0.41	$ 1.21
Weighted average shares outstanding used in computing basic earnings per share		9,739	10,240	9,858	10,283
Diluted earnings per share	[1]	$ 0.35	$ 1.98	$ 0.41	$ 1.21
Weighted average shares outstanding used in computing diluted earnings per share		9,741	10,310	9,886	10,350
Product licenses
Revenues:
Total revenues		$ 14,816	$ 20,121	$ 27,400	$ 38,412
Cost of revenues:
Total cost of revenues		514	552	1,184	1,071
Subscription services
Revenues:
Total revenues		8,021	7,104	15,989	14,248
Cost of revenues:
Total cost of revenues		3,792	3,489	7,856	7,087
Total product licenses and subscription services
Revenues:
Total revenues		22,837	27,225	43,389	52,660
Cost of revenues:
Total cost of revenues		4,306	4,041	9,040	8,158
Product support
Revenues:
Total revenues		70,038	72,978	141,196	144,428
Cost of revenues:
Total cost of revenues		6,837	7,721	13,555	14,788
Other services
Revenues:
Total revenues		17,709	17,534	37,423	36,015
Cost of revenues:
Total cost of revenues		$ 12,846	$ 13,588	$ 25,939	$ 28,577

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