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Securities Financing Including Redeemable Preferred Stocks - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2018 shares
Series E Redeemable Preferred Stock [Member] |
Class Of Stock [Line Items] |
Redeemable preferred stock, redemption term | The letter agreement extended the date upon which the holder of the Series E Redeemable Preferred has the right to elect to redeem the Series E Redeemable Preferred shares from August 2, 2019 to October 25, 2023. The letter agreement also provides for the amendment of certain other terms relating to the Series E Redeemable Preferred, including an increase in the per annum dividend rate payable in respect of the Series E Redeemable Preferred (a) by 0.50% on the third anniversary of the Financing Transaction, (b) by an additional 0.50% on the fourth anniversary of the Financing Transaction and (c) by an additional 1.0% on the fifth anniversary of the Financing Transaction.
Preferred stock cumulative dividend rate | 14.00%
Participating right in dividends and liquidating distributions expressed in number of common shares | 303,646
Series E Redeemable Preferred Stock [Member] | Third Anniversary of Financing Transactions [Member] |
Class Of Stock [Line Items] |
Increase in dividends payable percentage | 0.50%
Series E Redeemable Preferred Stock [Member] | Fourth Anniversary of Financing Transactions [Member] |
Class Of Stock [Line Items] |
Additional increase in dividends payable percentage | 0.50%
Series E Redeemable Preferred Stock [Member] | Fifth Anniversary of Financing Transactions [Member] |
Class Of Stock [Line Items] |
Additional increase in dividends payable percentage | 1.00%
Series F Redeemable Preferred Stock [Member] |
Class Of Stock [Line Items] |
Common stock voting rights shares | 456,225
Voting rights description | As of September 30, 2018, the Series F Redeemable Preferred has voting rights (the “Series F Voting Rights”) to vote as a single class on all matters which the common stock have the right to vote and is entitled to a number of votes equal to 456,225 shares of our common stock.

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- Definition Temporary equity preferred stock redemption terms. + References No definition available. + Details
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- Definition Description of the type or class of security that is classified as temporary equity, including its redemption features (for example, sinking fund, at option of holders, out of future earnings), conversion features, and the rights of holders, if any, in the event of default, including the effect, if any, on junior securities in the event a required dividend, sinking fund, or other redemption payment(s) is not paid. Include also a description of stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (27) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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