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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 28, 2019 | Jun. 29, 2019 | Sep. 29, 2018 | Sep. 28, 2019 | Sep. 29, 2018 | Sep. 26, 2020
Incomes Taxes [Line Items] |  |  |  |  |  |
Provision (benefit) for income taxes | $ 12,148 |  | $ (1,448) | $ 13,581 | $ (1,676) |
Effective tax rate | 13.70% |  | (2.60%) | 14.40% | (3.20%) |
Unrecognized tax benefits | $ 39,000 |  |  | $ 39,000 |  |
Unrecognized tax benefits that would impact effective tax rate | 38,800 |  |  | 38,800 |  |
Unrecognized tax benefits, gross increase to current year unrecognized tax benefits | 100 | $ 300 |  |  |  |
Unrecognized tax benefits, gross decrease to prior year unrecognized tax benefits | 1,100 |  |  |  |  |
Balance of accrued interest and penalties, net of tax | $ 3,400 |  |  | $ 3,400 |  |
Forecast |  |  |  |  |  |
Incomes Taxes [Line Items] |  |  |  |  |  |
Unrecognized tax benefits, gross decrease to current year unrecognized tax benefits |  |  |  |  |  | $ 3,000

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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