v2.4.0.8

Fair Value Measurement (Details 2) (Contingent consideration, USD $) | 12 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012
Changes in liabilities measured at fair value for which the Company has used Level 3 inputs to determine fair value |  |
Balance at the beginning of the period | $ 14,511,000 | $ 10,151,000
Acquisition contingent consideration | 18,050,000 | 8,185,000
Settlements | (19,608,000) | (3,162,000)
Increase (decrease) of contingent consideration | 5,437,000 | (663,000)
Balance at the end of the period | 18,390,000 | 14,511,000
Jacobs Trading, LLC |  |
Changes in liabilities measured at fair value for which the Company has used Level 3 inputs to determine fair value |  |
Increase (decrease) of contingent consideration | 5,097,000 |
NESA |  |
Changes in liabilities measured at fair value for which the Company has used Level 3 inputs to determine fair value |  |
Increase (decrease) of contingent consideration | $ 340,000 |
Level 3 | Income approach | Minimum |  |
Changes in liabilities measured at fair value for which the Company has used Level 3 inputs to determine fair value |  |
Discount rate (as a percent) | 2.00% |
Level 3 | Income approach | Maximum |  |
Changes in liabilities measured at fair value for which the Company has used Level 3 inputs to determine fair value |  |
Discount rate (as a percent) | 9.70% |

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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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