Business Acquisitions (Narrative) (Details) (Business Acquisition, Acquiree - Duarte Business [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
Mar. 31, 2013	Dec. 31, 2012	Dec. 28, 2012
Business Acquisition, Acquiree - Duarte Business [Member]
Purchase agreement contract price		$ 200,000
Cash paid at closing		198,900
Current portion of contractual commitment acquired that is expected to result in future losses			4,758
Long-term portion of contractual commitment acquired that is expected to result in future losses			15,383
Long-term portion of performance obligation acquired			13,215
Current portion of performance obligation acquired			12,985
Long-term receivable from Seller for services to be provided to the Seller			18,097
Current receivable from Seller for services to be provided to the Seller			8,103
Transaction costs	$ 1,707

Amount of cash paid to acquire the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 amount of acquisition cost of a business combination allocated to unfavorable contracts assumed from the acquired entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 37

-Subparagraph k

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 04-1

-Paragraph 4, 8

-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

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 59

-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 amount of acquisition cost of a business combination allocated to a commitment for the acquired entity to continue to provide services to the seller of the acquired entity, for which the company will be paid by the seller of the acquired entity.

+ References

No definition available.

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- Definition

The amount of acquisition cost of a business combination allocated to the contractual payments receivable from the seller of the acquired entity related to the commitment of the acquired entity to continue to provide services to the seller of the acquired entity.

+ References

No definition available.

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- Definition

The current portion of the amount of acquisition cost of a business combination allocated to the contractual payments receivable from the seller of the acquired entity related to the commitment of the acquired entity to continue to provide services to the seller of the acquired entity. The amount is the balance expected to be received from the seller of the acquired entity in the next twelve months.

+ References

No definition available.

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- Definition

The current portion of the amount of acquisition cost of a business combination allocated to a commitment for the acquired entity to continue to provide services to the seller of the acquired entity, for which the company will be paid by the seller of the acquired entity. The amount is the portion of the performance obligation that will be performed in the next twelve months.

+ References

No definition available.

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- Definition

The current portion of the amount of acquisition cost of a business combination allocated to unfavorable contracts assumed from the acquired entity. This amount is expected to be recognzied in the next twelve months.

+ References

No definition available.

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- Definition

The purchase price of the acquired entity as stated in the purchase agreement. This price has not been adjusted for subsequent customary purchase price adjustments, for example working capital adjustments.

+ References

No definition available.

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