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Note 11 (Details) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 27, 2015 USD ($) | Jun. 28, 2014 USD ($) | Jun. 27, 2015 USD ($) | Jun. 28, 2014 USD ($) | Sep. 26, 2015 USD ($) | Sep. 27, 2014 USD ($)
Note 11 (Details) [Line Items] |  |  |  |  |  |
Available-for-sale Securities | $ 103,352,000 |  | $ 103,352,000 |  |  | $ 128,117,000
Proceeds from Sale and Maturity of Marketable Securities | 26,367,000 | $ 1,185,000 | 39,968,000 | $ 7,245,000 |  |
Marketable Securities, Gain (Loss) | (1,395,000) | $ (65,000) | (1,904,000) | $ (361,000) |  |
Mutual Funds [Member] |  |  |  |  |  |
Note 11 (Details) [Line Items] |  |  |  |  |  |
Unrealized Gain (Loss) on Securities |  |  | $ (2,500,000) |  |  |
Number of Funds |  |  | 28 |  |  |
Marketable Securities | 71,600,000 |  | $ 71,600,000 |  |  |
Available-for-sale Securities | $ 90,316,000 |  | $ 90,316,000 |  |  | $ 128,117,000
Scenario, Forecast [Member] | Mutual Funds [Member] |  |  |  |  |  |
Note 11 (Details) [Line Items] |  |  |  |  |  |
Available-for-sale Securities |  |  |  |  | $ 67,000,000 |
Scenario, Forecast [Member] | Fixed-to-Floating Perpetual Preferred Stock [Member] |  |  |  |  |  |
Note 11 (Details) [Line Items] |  |  |  |  |  |
Available-for-sale Securities |  |  |  |  | 20,000,000 |
Scenario, Forecast [Member] | Corporate Bond Securities [Member] |  |  |  |  |  |
Note 11 (Details) [Line Items] |  |  |  |  |  |
Available-for-sale Securities |  |  |  |  | $ 24,000,000 |

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