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Long-Term Debt (Parenthetical) (Detail) | 12 Months Ended
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Jan. 31, 2013
10% Senior Subordinated Convertible Notes due January 31, 2016 |
Debt Instrument [Line Items] |
Convertible notes, interest rate | 10.00%
Convertible notes, maturity date | Jan. 31, 2016
9% Senior Subordinated Convertible Notes due February 15, 2016 |
Debt Instrument [Line Items] |
Convertible notes, interest rate | 9.00%
Convertible notes, maturity date | Feb. 15, 2016
8% Senior Subordinated Convertible Notes due February 1, 2015 |
Debt Instrument [Line Items] |
Convertible notes, interest rate | 8.00%
Convertible notes, maturity date | Feb. 01, 2015

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- Definition Interest rate stated in the contractual debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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