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Participation and Contributions to Multi Employer Pension Plans (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2011
Multiemployer Plans [Line Items] |  |  |
Partnership Contributions | $ 8,018 | $ 7,237 | $ 6,930
New England Teamsters & Trucking Industry Pension Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
EIN / Pension Plan Number | 04-6372430 / 001 |  |
Pension Protection Act Zone Status | Yellow | Yellow |
FIP / RP Status Pending / Implemented | NA |  |
Partnership Contributions | 2,709 | 2,532 | 2,512
Surcharge Imposed | No |  |
Expiration Date of Collective- Bargaining Agreement | Mar. 31, 2014 |  |
Westchester Teamsters Pension Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
EIN / Pension Plan Number | 13-6123973 / 001 |  |
Pension Protection Act Zone Status | Green | Green |
FIP / RP Status Pending / Implemented | NA |  |
Partnership Contributions | 820 | 771 | 817
Surcharge Imposed | No |  |
Expiration Date of Collective- Bargaining Agreement | Jan. 31, 2014 |  |
Local 553 Pension Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
EIN / Pension Plan Number | 13-6637826 / 001 |  |
Pension Protection Act Zone Status | Green | Green |
FIP / RP Status Pending / Implemented | NA |  |
Partnership Contributions | 2,729 | 2,152 | 2,082
Surcharge Imposed | No |  |
Expiration Date of Collective- Bargaining Agreement | Jan. 15, 2014 |  |
Local 463 Pension Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
EIN / Pension Plan Number | 11-1800729 / 001 |  |
Pension Protection Act Zone Status | Green | Green |
FIP / RP Status Pending / Implemented | NA |  |
Partnership Contributions | 146 | 155 | 155
Surcharge Imposed | No |  |
Expiration Date of Collective- Bargaining Agreement | Feb. 28, 2014 |  |
All Other Multiemployer Pension Plans |  |  |
Multiemployer Plans [Line Items] |  |  |
Partnership Contributions | $ 1,614 | $ 1,627 | $ 1,364

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- Definition Amount of contributions made to multiemployer plans by the employer. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450691-114947 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
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- Definition Indicate the multiemployer plan's certified zone status as currently required by the Pension Protection Act of 2006 or a subsequent amendment thereof. The zone status categories are red (critical status), orange (seriously endangered), yellow (endangered), and green (none of the above). The acceptable values are "red", "orange", "yellow", "green", "other", and "NA". A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
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- Definition Expiration date of the collective bargaining arrangement requiring contributions to the multiemployer plan, in CCYY-MM-DD format. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
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- Definition Indicate whether a funding improvement plan or rehabilitation plan has been implemented or is pending for a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. The acceptable values are "no", "pending", "implemented", "other", and "NA". + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
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- Details
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- Definition Indicate whether the employer paid a surcharge to the pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. The acceptable values are "no", "yes", and "NA". + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
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