Stock-Based Compensation And Stock Ownership Plans (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Based Compensation Tax Benefit	$ 633
Minimum Percentage of Fair Market Value for Employee Stock Purchase Plan Purchase Price	85.00%
Employee Stock Purchase Plan Shares Issued	10,349	5,475	10,448
Employee Stock Purchase Plan Expense	30	16	24
Parent Company [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company's Closing Stock Price	$ 21.30
Non-vested Stock, Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	0 years 0 months 0 days
Non-vested Stock, Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years 0 months 0 days
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of Stock Options	10 years
Number of Stock Options Granted During Period	0	0	0
Cash Received from Stock Option Exercises	338	323	484
Stock Option Exercises, Aggregate Intrinsic Value of Shares Received	689	567	564
Non-vested Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Vested, Aggregated Intrinsic Value	660	150	125
Stock-Based Compensation Expense Related to Non-Vested Stock, Net of Forfeitures	1,666	1,436	956
Unrecognized Stock-Based Compensation Expense Related to Non-vested Stock	$ 2,246
Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant Under Stock-Based Compensation Plans	843,749

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Aggregate intrinsic value of vested restricted stock

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Share-based Compensation Arrangement by Share-based Payment Award, Term

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No definition available.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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Aggregate unrecognized cost of share-based awards, other than options, made to employees under an equity-based compensation plan, that have yet to vest.

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No definition available.

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The amount of plan compensation cost recognized during the period.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to differences in the deductibility of incentive stock options and other equity-based compensation costs in accordance with generally accepted accounting principles and enacted tax laws.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The discount rate from market value on purchase date that participants pay for shares.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Price of a single share of a number of saleable stocks of a company.

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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