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Redeemable Series G Preferred Stock - Allocation of Cash from Series G Preferred and Warrants Issued (Parenthetical) (Detail) | 12 Months Ended
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Dec. 31, 2013
Series G Convertible Preferred Stock [Member] |
Temporary Equity [Line Items] |
Estimated period for redemption of preferred stock | Oct. 31, 2013
Minimum [Member] |
Temporary Equity [Line Items] |
Credit-risk adjusted rates | 3.98%
Maximum [Member] |
Temporary Equity [Line Items] |
Credit-risk adjusted rates | 4.89%

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- Definition Credit risk adjustment rate. + References No definition available. + Details
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- Definition Date the preferred stock has been redeemed, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 + Details
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Period Type: | duration

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- Details
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Period Type: | duration