Revenue Information for Core Markets (Detail) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Segment Reporting Information [Line Items]
Total revenues	$ 328,909	$ 273,203	$ 951,700	$ 809,185
Healthcare
Segment Reporting Information [Line Items]
Total revenues	135,409	113,523	373,543	324,880
Mobile and Consumer
Segment Reporting Information [Line Items]
Total revenues	91,613	66,292	270,842	208,153
Enterprise
Segment Reporting Information [Line Items]
Total revenues	68,536	71,006	211,900	217,306
Imaging
Segment Reporting Information [Line Items]
Total revenues	$ 33,351	$ 22,382	$ 95,415	$ 58,846