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Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Sep. 24, 2011 | Sep. 25, 2010 | Sep. 26, 2009 | Mar. 24, 2012
Goodwill and Other Intangible Assets [Abstract] |  |  |  |
Reversal of deferred tax asset valuation allowance as a reduction to goodwill |  |  | $ 1,385 |
Goodwill [Abstract] |  |  |  |
Goodwill | 284,113 | 283,706 |  |
Accumulated adjustments | (6,462) | (6,462) |  |
Goodwill, net | 277,651 | 277,244 |  | 277,651
Goodwill acquired | 407 |  |  |
Other intangible assets [Abstract] |  |  |  |
Other intangible assets, gross | 33,745 | 32,383 |  |
Accumulated amortization | (17,667) | (14,407) |  |
Other intangible assets, net | 16,078 | 17,976 |  |
Other intangible assets aggregate amortization expense [Abstract] |  |  |  |
Aggregate amortization expense | 3,260 | 2,423 | 2,220 |
Other intangible assets amortization expense for the five succeeding fiscal years [Abstract] |  |  |  |
2012 | 2,834 |  |  |
2013 | 2,676 |  |  |
2014 | 2,341 |  |  |
2015 | 2,180 |  |  |
2016 | 1,690 |  |  |
Customer Lists [Member] |  |  |  |
Other intangible assets [Abstract] |  |  |  |
Other intangible assets, gross | 26,523 | 25,761 |  |
Accumulated amortization | (15,036) | (12,671) |  |
Noncompete Agreements [Member] |  |  |  |
Other intangible assets [Abstract] |  |  |  |
Other intangible assets, gross | 3,756 | 3,156 |  |
Accumulated amortization | (760) | (107) |  |
Tradenames [Member] |  |  |  |
Other intangible assets [Abstract] |  |  |  |
Other intangible assets, gross | 1,499 | 1,499 |  |
Accumulated amortization | (1,162) | (1,012) |  |
Other Intangible Assets [Member] |  |  |  |
Other intangible assets [Abstract] |  |  |  |
Other intangible assets, gross | 1,967 | 1,967 |  |
Accumulated amortization | (709) | (617) |  |
Propane [Member] |  |  |  |
Goodwill [Abstract] |  |  |  |
Goodwill | 265,313 | 264,906 |  |
Accumulated adjustments | 0 | 0 |  |
Goodwill, net | 265,313 | 264,906 |  | 265,313
Goodwill acquired | 407 |  |  |
Fuel Oil and Refined Fuels [Member] |  |  |  |
Goodwill [Abstract] |  |  |  |
Goodwill | 10,900 | 10,900 |  |
Accumulated adjustments | (6,462) | (6,462) |  |
Goodwill, net | 4,438 | 4,438 |  | 4,438
Goodwill acquired | 0 |  |  |
Natural Gas and Electricity [Member] |  |  |  |
Goodwill [Abstract] |  |  |  |
Goodwill | 7,900 | 7,900 |  |
Accumulated adjustments | 0 | 0 |  |
Goodwill, net | 7,900 | 7,900 |  | 7,900
Goodwill acquired | $ 0 |  |  |

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- Definition The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 72 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -Clause 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Gross amount, as of the balance sheet date, of the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable), in excess of the fair value of net assets acquired in one or more business combination transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267 + Details
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