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Commitments And Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 6 Months Ended | 9 Months Ended
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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 + Details
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