CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Revenues
Revenues		$ 1,032,475	$ 932,169	$ 881,356
Operating expenses:
Cost of revenues	[1]	310,699	287,123	265,173
Research and development		128,383	110,870	103,669
Selling, general and administrative	[1]	380,362	339,796	328,940
Amortization of intangible assets	[1]	6,594	12,709	13,982
Restructuring and acquisition-related		0	4,471	0
Total operating expenses		826,038	754,969	711,764
Operating income		206,437	177,200	169,592
Interest expense, net		(31,311)	(25,790)	(26,633)
Other income (expense), net		12,884	(86)	1,610
Income before income taxes		188,010	151,324	144,569
Provision for income taxes		45,595	23,068	35,121
Net income		142,415	128,256	109,448
Other comprehensive income (loss):
Foreign currency translation adjustments		(9,913)	10,517	(26,296)
Comprehensive income		$ 132,502	$ 138,773	$ 83,152
Basic earnings per share (in dollars per share)		$ 4.79	$ 4.16	$ 3.52
Shares used in computing basic earnings per share (in shares)		29,711	30,862	31,129
Diluted earnings per share (in dollars per share)		$ 4.57	$ 3.98	$ 3.39
Shares used in computing diluted earnings per share (in shares)		31,180	32,245	32,308
Transactional and maintenance
Revenues
Revenues		$ 766,059	$ 652,660	$ 605,919
Professional services
Revenues
Revenues		176,804	179,569	169,738
License
Revenues
Revenues		$ 89,612	$ 99,940	$ 105,699

[1] Cost of revenues and selling, general and administrative expenses exclude the amortization of intangible assets. See Note 7.