Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net sales:
Total net sales	$ 385,256	$ 335,182
Cost of sales:
Total cost of sales	119,227	95,414
Gross profit	266,029	239,768
Operating expenses:
Sales and marketing	120,157	116,783
Research and development	82,161	80,086
General and administrative	33,179	33,358
Total operating expenses	235,497	230,227
Operating income	30,532	9,541
Other income (expense)	33	(5,070)
Income before income taxes	30,565	4,471
Provision (benefit) for income taxes	5,329	(24)
Net income	$ 25,236	$ 4,495
Basic earnings per share (in usd per share)	$ 0.19	$ 0.03
Weighted average shares outstanding - basic (in shares)	132,105	131,483
Diluted earnings per share (in usd per share)	$ 0.19	$ 0.03
Weighted average shares outstanding - diluted (in shares)	133,175	132,717
Dividends declared per share (in usd per share)	$ 0.28	$ 0.27
Product
Net sales:
Total net sales	$ 343,685	$ 295,092
Cost of sales:
Total cost of sales	115,024	91,657
Software maintenance
Net sales:
Total net sales	41,571	40,090
Cost of sales:
Total cost of sales	$ 4,203	$ 3,757