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Stockholders' Equity - Summary of Preferred Shares Outstanding (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | Dec. 31, 2013
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Series F Preferred Stock |
Class of Stock [Line Items] |
Preferred Shares Outstanding | 500 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesFPreferredStockMember
Liquidation Preference | $ 50,000 us-gaap_PreferredStockLiquidationPreferenceValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesFPreferredStockMember
Series G Preferred Stock |
Class of Stock [Line Items] |
Preferred Shares Outstanding | 250 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesGPreferredStockMember
Liquidation Preference | $ 25,000 us-gaap_PreferredStockLiquidationPreferenceValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesGPreferredStockMember

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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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