Long-Lived Assets, Consisting of Property, Plant and Equipment by Geographic Area (Detail) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 68,596	$ 63,669
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	55,295	60,263
Asia/Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	1,920	3,076
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 11,381	$ 330