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Schedule II - Liabilities Subject to Compromise (Detail) (USD $) In Thousands, unless otherwise specified | Apr. 30, 2013
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Condensed Financial Statements, Captions [Line Items] |
Consolidated liabilities subject to compromise | $ 1,704,641 us-gaap_LiabilitiesSubjectToCompromise
Predecessor [Member] |
Condensed Financial Statements, Captions [Line Items] |
Consolidated liabilities subject to compromise | $ 1,704,641 us-gaap_LiabilitiesSubjectToCompromise / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember

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- Definition Total amount of liabilities subject to compromise. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56145-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6916575&loc=d3e55717-112764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6918054&loc=d3e56015-112765 + Details
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