Restructuring and Other Charges Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 358	$ 3,122		$ 3,711	$ 4,641
Restructuring and Related Cost, Incurred Cost			$ 3,300
Workforce-related
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	358	2,972	2,100	2,506	4,478
Facilities and other
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0	$ 150	$ 1,200	$ 1,205	$ 163