CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net revenues:
Revenues	$ 97,680	$ 94,876	$ 198,329	$ 189,240
Cost of revenues:
Total cost of revenues	34,314	34,738	68,199	67,686
Gross profit	63,366	60,138	130,130	121,554
Operating expenses:
Research and development	16,023	16,093	32,759	31,510
Marketing and selling	23,673	21,354	45,600	42,098
General and administrative	13,364	13,678	28,175	27,313
Restructuring costs, net	342	15	357	1,089
Total operating expenses	53,402	51,140	106,891	102,010
Operating income	9,964	8,998	23,239	19,544
Interest expense, net	(1,944)	(1,783)	(3,420)	(3,901)
Other income (expense), net	79	150	(8)	(3,405)
Income before income taxes	8,099	7,365	19,811	12,238
Provision for income taxes	726	359	1,852	841
Net income	$ 7,373	$ 7,006	$ 17,959	$ 11,397
Net income per common share – basic	$ 0.16	$ 0.15	$ 0.40	$ 0.25
Net income per common share – diluted	$ 0.16	$ 0.15	$ 0.40	$ 0.25
Weighted-average common shares outstanding – basic	44,740	45,211	44,778	44,887
Weighted-average common shares outstanding – diluted	45,110	46,550	45,280	46,420
Subscription
Net revenues:
Revenues	$ 34,142	$ 21,508	$ 67,096	$ 46,376
Cost of revenues:
Total cost of revenues	6,292	3,575	11,894	6,190
Maintenance
Net revenues:
Revenues	27,775	30,443	56,102	60,295
Cost of revenues:
Total cost of revenues	5,253	5,822	10,530	11,396
Integrated solutions & other
Net revenues:
Revenues	35,763	42,925	75,131	82,569
Cost of revenues:
Total cost of revenues	$ 22,769	$ 25,341	$ 45,775	$ 50,100