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Note 12 - Fair Value Measurements (Details Textual) - USD ($) | Jun. 28, 2020 | Sep. 29, 2019 | Mar. 31, 2014
--- | --- | --- | ---
Long-term Debt, Total | $ 539,290,000 | $ 429,391,000 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Investments, Fair Value Disclosure, Total | 6,068,000 |  |
Equity Securities without Readily Determinable Fair Value, Amount | 9,610,000 |  |
Fair Value, Inputs, Level 3 [Member] | Senior Secured Notes [Member] |  |  |
Long-term Debt, Total | $ 576,000,000 |  |
Fair Value, Inputs, Level 3 [Member] | TCT and Private Equity Investment [Member] |  |  |
Equity Securities without Readily Determinable Fair Value, Percent | 17.00% |  |
Fair Value, Inputs, Level 2 [Member] |  |  |
Warrants and Rights Outstanding | $ 430,000 | $ 1,195,000 | $ 16,930,000

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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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