Unaudited Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues
Total revenues	$ 451,637	$ 353,519
Cost of revenues
Operating expenses	53,085	38,492
Depreciation and amortization	12,147	9,992
Total cost of revenues	65,232	48,484
Administrative expenses
Sales and marketing	103,574	74,996
Research and development	42,669	31,605
General and administrative	65,605	60,504
Depreciation and amortization	14,125	11,663
Total administrative expenses	225,973	178,768
Total operating expenses	291,205	227,252
Operating income	160,432	126,267
Interest expense	(837)	(215)
Other income (expense), net	6,004	1,412
Income before income taxes	165,599	127,464
Provision for income taxes	46,303	35,534
Net income	$ 119,296	$ 91,930
Earnings per share, basic	$ 2.06	$ 1.58
Earnings per share, diluted	$ 2.06	$ 1.58
Weighted average shares outstanding:
Basic	57,867	58,014
Diluted	57,991	58,219
Comprehensive earnings (loss):
Net income	$ 119,296	$ 91,930
Unrealized net gains (losses) on available-for-sale securities	1,050	(1,522)
Tax effect	(200)	403
Other comprehensive income (loss), net of tax	850	(1,119)
Comprehensive earnings (loss)	120,146	90,811
Recurring [Member]
Revenues
Total revenues	444,421	348,164
Implementation and Other [Member]
Revenues
Total revenues	$ 7,216	$ 5,355