Stock-Based Compensation And Stock Ownership Plans (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2016	Oct. 02, 2015	Oct. 03, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Tendered for Tax Withholding on Vesting of Restricted Shares	19,973	30,353
Employee Stock Purchase Plan Expense	$ 33	$ 33	$ 57
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date	85.00%
Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant Under Stock-Based Compensation Plans	589,717
Employee Stock Purchase Plan Shares Issued	7,732	8,062	15,969
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant Under Stock-Based Compensation Plans	0
Number of Stock Options Granted During Period	0	0	0
Cash Received from Stock Option Exercises	$ 0	$ 118	$ 78
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award	P10Y
Tax Benefit on Stock Based Compensation Expense	$ 112	482	493
Aggregated Intrinsic Value Of Shares Received Option Excercise	$ 0	221	96
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
Non-vested Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense Related to Non-Vested Stock, Net of Forfeitures	$ 1,252	1,287	1,523
Unrecognized Stock-Based Compensation Expense Related to Non-vested Stock	1,292
Fair Value Of Vested Restricted Stock	2,348	3,294	3,123
Tax Benefit on Stock Based Compensation Expense	476	598	641
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-Based Compensation Expense Related to Non-Vested Stock, Net of Forfeitures	547	$ 286	$ 165
Unrecognized Stock-Based Compensation Expense Related to Non-vested Stock	$ 652

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Aggregated Intrinsic Value Of Shares Received Option Excercise

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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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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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The amount of plan compensation cost recognized during the period.

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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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Discount rate from fair value on purchase date that participants pay for shares.

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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 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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Description of pertinent provisions of equity-based compensation awards that have actual or potential impact upon the company's financial statements.

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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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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