CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Total revenues	$ 380,266	$ 357,195	$ 725,136	$ 679,556
Operating expenses:
Cost of revenues	79,806	71,794	156,375	140,997
Research and development	40,266	36,387	76,899	75,367
Selling, general and administrative	100,158	96,414	193,153	194,462
Amortization of intangible assets	275	543	550	1,087
Total operating expenses	220,505	205,138	425,036	411,913
Operating income	159,761	152,057	300,100	267,643
Interest expense, net	(23,897)	(17,211)	(46,697)	(29,406)
Other income (expense), net	1,605	(2,361)	1,969	(932)
Income before income taxes	137,469	132,485	255,372	237,305
Provision for income taxes	35,919	28,102	56,179	47,963
Net income	101,550	104,383	199,193	189,342
Other comprehensive income (loss):
Foreign currency translation adjustments	6,552	(3,207)	24,933	(5,345)
Comprehensive income	$ 108,102	$ 101,176	$ 224,126	$ 183,997
Earnings per share:
Basic (in dollars per share)	$ 4.04	$ 3.99	$ 7.94	$ 7.10
Diluted (in dollars per share)	$ 4.00	$ 3.95	$ 7.83	$ 7.02
Shares used in computing earnings per share:
Basic (in shares)	25,116	26,145	25,080	26,662
Diluted (in shares)	25,419	26,421	25,431	26,978
Gain (Loss) on Disposition of Assets	$ 0	$ 0	$ 1,941	$ 0
On-premises and SaaS software
Total revenues	154,584	149,088	299,144	275,426
Professional services
Total revenues	27,175	24,365	49,497	50,901
Scores
Total revenues	$ 198,507	$ 183,742	$ 376,495	$ 353,229