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Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Sep. 25, 2018 | Sep. 26, 2017
--- | --- | ---
Current [Member] |  |  |
Deferred assets (liabilities): |  |  |
Tax effect of net operating loss carry-forward |  |  |
General business credits |  |  |
Partnership/Joint Venture basis differences |  |  |
Deferred revenue |  |  |
Property and equipment basis differences |  |  |
Intangibles basis differences |  |  |
Other accrued liability and asset difference |  | 128 | 117
Net deferred tax assets |  | 128 | 117
Less valuation allowance | [1] | (128) | (117)
Net deferred tax assets |  |  |
Long Term [Member] |  |  |
Deferred assets (liabilities): |  |  |
Tax effect of net operating loss carry-forward |  | 3,605 | 4,084
General business credits |  | 2,264 | 1,378
Partnership/Joint Venture basis differences |  | (63) | (126)
Deferred revenue |  | 111 | 75
Property and equipment basis differences |  | (1,444) | (859)
Intangibles basis differences |  | (803) | (705)
Other accrued liability and asset difference |  | 1,055 | 1,454
Net deferred tax assets |  | 4,725 | 5,301
Less valuation allowance | [1] | (4,725) | (5,301)
Net deferred tax assets |  |  |
[1] | The valuation allowance decreased by $565,000 during the year ended September 25, 2018.

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