Commitments And Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended		3 Months Ended
Feb. 28, 2010 Faigin Matter	Aug. 31, 2007 Colburn Matter	Mar. 31, 2013 Breach of Employment Contracts LegalMatter	Jun. 30, 2011 Walker Matter
Commitments and Contingencies Disclosure [Line Items]
Court awarded amount to plaintiff	$ 1.4
Total amount claimed by plaintiff		2.6		2.5
Plaintiff superior court claim		3.2		4.6
Bankruptcy claims filed in court			$ 5.1
Number of Bankruptcy claims filed			2

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Amount of proof of claim filed by the plaintiff in the Bankruptcy Court.

+ References

No definition available.

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- Definition

Amount of claim made in the Superior Court by the plaintiff.

+ References

No definition available.

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- Definition

Amount of bankruptcy claim filed with bankruptcy court.

+ References

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 90-7

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The aggregate number of claims filed with the bankruptcy court.

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- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

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