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Significant Contracts (Detail) (USD $) | 12 Months Ended | 1 Months Ended | 12 Months Ended |  | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012 | Jan. 31, 2014 Surplus Contract Option | Feb. 29, 2012 Surplus Contract Option | Sep. 30, 2014 Surplus Contract | Sep. 30, 2013 Surplus Contract | Sep. 30, 2014 Surplus Contract Revenue U.S. Department of Defense | Sep. 30, 2013 Surplus Contract Revenue U.S. Department of Defense | Sep. 30, 2012 Surplus Contract Revenue U.S. Department of Defense | Sep. 30, 2014 Surplus Contract Rolling stock Surplus contract revenue U.S. Department of Defense Minimum | Sep. 30, 2014 Surplus Contract Rolling stock Surplus contract revenue U.S. Department of Defense Maximum | Apr. 02, 2014 Sale of surplus assets of U.S. Department of Defense contract | Apr. 02, 2014 Non-rolling stock surplus contract Option | Sep. 30, 2014 Non-rolling stock surplus contract Expected | Apr. 02, 2014 Non-rolling stock surplus contract Expected | Jun. 30, 2012 Scrap Contract Option | Sep. 30, 2014 Scrap Contract period Option | Sep. 30, 2013 Scrap Contract | Sep. 30, 2012 Scrap Contract | Sep. 30, 2014 Scrap Contract Maximum | Sep. 30, 2014 Scrap Contract Revenue U.S. Department of Defense | Sep. 30, 2013 Scrap Contract Revenue U.S. Department of Defense | Sep. 30, 2012 Scrap Contract Revenue U.S. Department of Defense
Significant Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of renewal options |  |  |  |  | 2 |  |  |  |  |  |  |  |  | 4 |  |  | 3 |  |  |  |  |  |  |
Term of renewal options |  |  |  |  | 1 year |  |  |  |  |  |  |  |  | 1 year |  |  | 1 year |  |  |  |  |  |  |
Base term of follow-on contract extension |  |  |  | 10 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of renewal options under follow-on contract |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of each renewal option under follow-on contract |  |  |  | 1 month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of renewal options exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |
Usable surplus property to be purchased as a fixed percentage of DoD's original acquisition value |  |  |  |  |  | 1.80% |  |  |  |  |  |  |  |  | 4.35% | 4.35% |  |  |  |  |  |  |  |
Term of contract |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |
Profits from resale of the property retained (as a percent) |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk (as a percent) |  |  |  |  |  |  |  | 26.80% | 27.70% | 27.20% | 30.00% | 35.00% |  |  |  |  |  |  |  |  |  | 14.40% | 13.50% | 16.10%
Liability for inventory included in accrued expenses and other current liabilities | $ 44,484,000 | $ 34,825,000 |  |  |  | $ 19,545,000 | $ 9,257,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of surplus contracts on which bidding was held |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Profits distributed to DLA Disposition Services (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 77.00% |  |  |  |  |  |
Additional profit sharing distribution (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |
Performance incentive measurement period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 months |  |  |  |  |  |
Amount of performance incentive earned |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,326,000 | 1,265,000 | 1,651,000 |  |  |  |
Profit-sharing distributions | 35,055,000 | 35,944,000 | 43,242,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34,935,000 | 35,944,000 | 43,242,000 |  |  |  |
Profit-sharing distributions accrued | $ 4,740,000 | $ 4,315,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,740,000 | $ 4,315,000 | $ 4,041,000 |  |  |  |
Number of consecutive quarterly periods in which performance ratio does not exceed benchmark ratios resulting in contract termination |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Number of preceding months in which performance ratio does not exceed benchmark ratios resulting in contract termination |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 months |  |  |  |  |  |

X
- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent, utilities, PTO and accrued bonuses and commissions. It also includes aggregate carrying amount, as of the balance sheet date, of current obligations not separately disclosed in the balance sheet due to materiality considerations. Current liabilities are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
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- Definition Represents the additional percentage of profit sharing distribution to be received by the entity as a performance incentive, as stated in the contract. + References No definition available. + Details
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- Definition Represents the number of surplus contracts on which bidding was held. + References No definition available. + Details
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- Definition Represents the term of the contract, in PnYnMnDTnHnMnS format, for example, P1Y5M13D represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Represents the number of consecutive quarterly periods in which performance ratio does not exceed benchmark ratios resulting in contract termination. + References No definition available. + Details
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- Definition Represents the number of preceding months in which performance ratio does not exceed benchmark ratios resulting in contract termination. + References No definition available. + Details
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- Definition Represents the number of renewal options in a follow-on contract awarded to the entity. + References No definition available. + Details
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- Definition Represents the base term of the follow-on contract extension awarded to the entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Represents the term of renewal options in a follow-on contract awarded to the entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Represents the number of renewal options in a contract entered into by the entity. + References No definition available. + Details
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- Definition Represents the number of renewal options exercised by the counter party in a contract entered into by the entity. + References No definition available. + Details
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- Definition Represents the percentage of profits realized from the ultimate sale and distribution of inventory to the DLA Disposition Services by the entity. + References No definition available. + Details
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- Definition Represents the percentage of profits from resale of the property retained by the entity. + References No definition available. + Details
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- Definition Represents the performance incentive earned by the entity for 12 months ended included in profit-sharing distributions in the consolidated statements of operations. + References No definition available. + Details
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- Definition Represents the period over which the performance incentive is measured prior to a specified date. + References No definition available. + Details
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- Definition This element represents the disbursement made as per the profit sharing arrangements after deducting the allowable operating expenses. + References No definition available. + Details
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- Definition This element represents the current portion of the profit sharing distributions payable. + References No definition available. + Details
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- Definition Represents the term of renewal options in a contract entered into by the entity, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Represents the fixed percentage of DoD's original acquisition value at which the entity is required to purchase all usable surplus property offered to it by the Department of Defense. + References No definition available. + Details
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- Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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