Property, Plant, and Equipment - Net (Property, Plant, and Equipment - Net) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Sep. 30, 2010
Property, Plant, and Equipment - Net
Land	$ 14,596		$ 14,596		$ 11,372
Buildings and improvements	179,787		179,787		171,257
Leasehold improvements	18,891		18,891		17,884
Machinery and production equipment	262,611		262,611		270,126
Computer equipment and software	62,791		62,791		57,518
Other	24,097		24,097		22,854
Construction in progress	39,265		39,265		13,125
Property, plant and equipment, gross total	602,038		602,038		564,136
Less accumulated depreciation	(401,996)		(401,996)		(370,612)
Property, plant and equipment, net, total	200,042		200,042		193,524
Depreciation expense	10,955	9,826	31,279	29,984
Capitalized interest	$ 383	$ 36	$ 896	$ 61

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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-Section 50
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-Publisher SEC
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- Definition

Gross amount, as of the balance sheet date, of long-lived, depreciable assets that include building structures held for productive use including any addition, improvement, or renovation to the structure, such as interior masonry, interior flooring, electrical, and plumbing.

+ References

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- Definition

Gross amount, at the balance sheet date, of long-lived assets under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

+ References

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
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-Name Accounting Standards Codification
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The amount of cash paid during the current period for interest that is capitalized.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
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-Name Accounting Standards Codification
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-Topic 230
-SubTopic 10
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- Definition

Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.

+ References

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- Definition

Gross amount, at the balance sheet date, of long-lived, depreciable assets that are an addition or improvement to assets held under lease arrangement.

+ References

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- Definition

Gross amount, as of the balance sheet date, of long-lived, depreciable assets used in the production process to produce goods and services.

+ References

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

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-Publisher AICPA
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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

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-SubTopic 10
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-Publisher SEC
-Name Regulation S-X (SX)
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-Publisher SEC
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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- Definition

This element represents capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The gross amount of long lived, depreciable assets that are used in the creation, maintenance and utilization of information systems and capitalized computer software costs as of the balance sheet date.

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