CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2015		Mar. 31, 2014
Revenues:
Transactional and maintenance	$ 138,683		$ 132,369		$ 270,093		$ 262,024
Professional services	37,946		34,619		73,144		68,905
License	30,480		18,474		53,422		38,876
Total revenues	207,109		185,462		396,659		369,805
Operating expenses:
Cost of revenues	70,991	[1]	58,183	[1]	137,291	[1]	115,502	[1]
Research and development	24,341		19,690		46,978		37,782
Selling, general and administrative	73,863	[1]	65,944	[1]	146,664	[1]	132,933	[1]
Amortization of intangible assets	3,515	[1]	2,908	[1]	6,447	[1]	5,921	[1]
Restructuring and acquisition-related	0		0		0		3,660
Total operating expenses	172,710		146,725		337,380		295,798
Operating income	34,399		38,737		59,279		74,007
Interest expense, net	(7,718)		(7,099)		(14,923)		(14,225)
Other income (expense), net	(648)		(351)		1		(1,312)
Income before income taxes	26,033		31,287		44,357		58,470
Provision for income taxes	7,163		10,536		11,080		20,742
Net income	18,870		20,751		33,277		37,728
Other comprehensive income (loss):
Foreign currency translation adjustments	(19,068)		2,893		(30,519)		6,898
Comprehensive income (loss)	$ (198)		$ 23,644		$ 2,758		$ 44,626
Earnings per share:
Basic (in dollars per share)	$ 0.60		$ 0.60		$ 1.05		$ 1.09
Diluted (in dollars per share)	$ 0.58		$ 0.59		$ 1.01		$ 1.06
Shares used in computing earnings per share:
Basic (in shares)	31,335		34,500		31,639		34,705
Diluted (in shares)	32,448		35,311		32,791		35,670

[1] Cost of revenues and selling, general and administrative expenses exclude the amortization of intangible assets. See Note 5 to the condensed consolidated financial statements.