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- Definition

Represents a number of financial institutions, in any such number of which the entity limits the amount of investment exposure in order to control credit risk.

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- Definition

Represents the maximum original term to maturity of an instrument to classify it as a cash equivalent.

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- Definition

Represents the number of levels below reportable segments at which the reporting units reside for which goodwill impairment testing is performed.

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- Definition

Represents the number of steps involved in the process of goodwill annual impairment test.

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- Definition

Represents the number of types of contracts under which revenue is recognized for work performed.

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- Definition

Represents the number of types of fixed-price contracts.

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- Definition

Represents the number of weeks in a fiscal year.

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Represents the high end of the range of the number of weeks in a fiscal year.

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Represents the low end of the range of the number of weeks in a fiscal year.

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- Definition

Represents the percentage of accounts receivable due from various agencies of the U.S. federal government.

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- Definition

The threshold percentage of the likelihood of a tax benefit being realized upon ultimate settlement, above which the largest benefit is used to measure the tax benefit to be recognized in the financial statements.

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Represents the period within which substantially all unbilled receivables are expected to be billed and collected.

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The maximum useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 35

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6904245&loc=d3e15217-109273

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 35

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6904245&loc=d3e15300-109273

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6904245&loc=d3e15211-109273

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The minimum useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company.

+ References

+ Details

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. 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.

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The minimum useful life of long lived, physical assets used in the normal conduct of business and not intended for resale. 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.

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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-BRD

-Chapter 4

-Paragraph 80

-Subparagraph Exhibit 4-8, 3

-IssueDate 2006-05-01

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Basis of Presentation and Preparation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 02, 2011 Y level D entity M step contract W	Oct. 03, 2010 W	Sep. 27, 2009 W
Principles of Consolidation and Presentation
Number of weeks in a fiscal year, low end of range	52
Number of weeks in a fiscal year, high end of range	53
Number of weeks in a fiscal year	52	53	52
Revenue Recognition and Contract Costs
Number of types of contracts under which revenue is recognized	3
Number of types of fixed-price contracts	2
Cash and Cash Equivalents
Maximum term of original maturity to classify instrument as cash equivalent (in days)	90
Restricted cash included in "Prepaid expenses and other current assets"	$ 5.0
Accounts Receivable - Net
Period for billing and collecting unbilled receivables (in months)	12
Period for earning majority of billings in excess of costs (in months)	12
Goodwill and Intangibles
Minimum contractual or economic life of intangible assets (in years)	1
Maximum contractual or economic life of intangible assets (in years)	10
Number of levels below reportable segments at which goodwill impairment testing is performed	1
Number of steps involved in process of goodwill annual impairment test	2
Income Taxes
Tax benefits, threshold likelihood of being realized upon ultimate settlement, for recognition in financial statements (as a percent)	50.00%
Concentration of Credit Risk
Financial institutions, in any such number of which investment exposure is limited	1
Accounts receivable due from various agencies of the U.S. federal government (as a percent)	32.00%	37.00%
Equipment
Estimated useful lives
Minimum estimated useful lives (in years)	3
Maximum estimated useful lives (in years)	10
Furniture and fixtures
Estimated useful lives
Minimum estimated useful lives (in years)	3
Maximum estimated useful lives (in years)	10
Buildings
Estimated useful lives
Maximum estimated useful lives (in years)	40