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Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified			12 Months Ended				12 Months Ended				12 Months Ended				12 Months Ended				12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Minimum	Sep. 30, 2014 Maximum	Sep. 30, 2014 Contract intangibles	Sep. 30, 2013 Contract intangibles	Sep. 30, 2014 Contract intangibles Minimum	Sep. 30, 2014 Contract intangibles Maximum	Sep. 30, 2014 Brand and technology intangible assets	Sep. 30, 2013 Brand and technology intangible assets	Sep. 30, 2014 Brand and technology intangible assets Minimum	Sep. 30, 2014 Brand and technology intangible assets Maximum	Sep. 30, 2014 Covenants not to compete	Sep. 30, 2013 Covenants not to compete	Sep. 30, 2014 Covenants not to compete Minimum	Sep. 30, 2014 Covenants not to compete Maximum	Sep. 30, 2014 Patent and trademarks	Sep. 30, 2013 Patent and trademarks	Sep. 30, 2014 Patent and trademarks Minimum	Sep. 30, 2014 Patent and trademarks Maximum
Intangible Assets
Useful Life			3 years	7 years			2 years	5 years			3 years	5 years			3 years	5 years			3 years	10 years
Gross Carrying Amount					$ 33,300	$ 37,236			$ 5,947	$ 5,965			$ 4,330	$ 4,440			$ 672	$ 509
Accumulated Amortization					(21,796)	(16,696)			(2,852)	(1,666)			(2,245)	(1,439)			(257)	(144)
Net Carrying Amount	$ 17,099	$ 28,205			$ 11,504	$ 20,540			$ 3,095	$ 4,299			$ 2,085	$ 3,001			$ 415	$ 365

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: 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=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: 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=26713463&loc=d3e16323-109275

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274



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),(b))

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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