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SEGMENT INFORMATION - Long Lived Assets by Geographic Area (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment	$ 117,700	$ 116,146
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment	94,282	93,496
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment	13,254	13,253
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment	8,768	7,912
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment	$ 1,396	$ 1,485

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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