Other Balance Sheet Information Summary of Inventories (Detail) (USD $)	Jun. 30, 2014	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Raw materials and purchased parts	$ 62,212,000	$ 57,678,000
Work-in-process	23,206,000	19,991,000
Finished goods	17,651,000	16,742,000
Inventory, net	103,069,000	94,411,000
Reserves for excess and obsolete inventory	$ 24,300,000