Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Property, plant and equipment
Gross amount	$ 236,769	$ 195,618
Less accumulated depreciation	(84,005)	(70,966)
Net amount	152,764	124,652
Assets under a capital lease for equipment related to the service center operation in Shanghai, China	903
Land and land improvements
Property, plant and equipment
Gross amount	6,856	6,415
Buildings
Property, plant and equipment
Gross amount	19,034	17,178
Machinery and equipment
Property, plant and equipment
Gross amount	179,407	154,670
Construction in process
Property, plant and equipment
Gross amount	$ 31,472	$ 17,355

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount 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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- Definition

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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