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Commitments And Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	9 Months Ended
	Jun. 30, 2013	Sep. 30, 2012
Commitments And Contingencies Disclosure [Abstract]
Litigation settlement with shareholders of former subsidiary		$ 5.3
Insurance reimbursement for litigation settlement	$ 1.1

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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- Definition

The gross income statement effect of insurance proceeds for each material event or transaction (that would not reasonably be expected to recur in the foreseeable future) that possesses a high degree of abnormality and are clearly unrelated to, or incidentally related to, the ordinary and typical activities of the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 20

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15138-107781

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