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Quarterly Results of Operations (Unaudited) - Additional Information (Detail) (USD $)	3 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Income tax valuation allowance against certain deferred tax assets	$ 10,132,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount

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- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e32123-109318

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