Contingencies	9 Months Ended
Sep. 30, 2013
Commitments And Contingencies Disclosure [Abstract]
Contingencies	9. Contingencies Many aspects of the Company’s business involve substantial risks of liability. In the normal course of business, the Company has been named as defendant or co-defendant in various legal actions, including arbitrations, class actions, and other litigation, creating substantial exposure. Certain of the actual or threatened legal matters include claims for substantial compensatory and/or punitive damages or claims for indeterminate amounts of damages. These proceedings arise primarily from securities brokerage, asset management and investment banking activities. The Company is also involved, from time to time, in other reviews, investigations and proceedings (both formal and informal) by governmental and self-regulatory agencies regarding the Company’s business which may result in adverse judgments, settlements, fines, penalties, injunctions or other relief. The investigations include, among other things, inquiries from the SEC, the Financial Industry Regulatory Authority (“FINRA”) and various state regulators. The Company is named as a respondent in a number of arbitrations by its current or former clients as well as lawsuits related to its sale of ARS. The Company accrues for estimated loss contingencies related to legal and regulatory matters when available information indicates that it is probable a liability had been incurred at the date of the condensed consolidated financial statements and the Company can reasonably estimate the amount of that loss. In many proceedings, however, it is inherently difficult to determine whether any loss is probable or even possible or to estimate the amount of any loss. In addition, even where loss is possible or an exposure to loss exists in excess of the liability already accrued with respect to a previously recognized loss contingency, it is often not possible to reasonably estimate the size of the possible loss or range of loss or possible additional losses or range of additional losses. For certain legal and regulatory proceedings, the Company cannot reasonably estimate such losses, particularly for proceedings that are in their early stages of development or where plaintiffs seek substantial, indeterminate or special damages. Numerous issues may need to be reviewed, analyzed or resolved, including through potentially lengthy discovery and determination of important factual matters, and by addressing novel or unsettled legal questions relevant to the proceedings in question, before a loss or range of loss or additional loss can be reasonably estimated for any proceeding. Even after lengthy review and analysis, the Company, in many legal and regulatory proceedings, may not be able to reasonably estimate possible losses or range of loss. For certain other legal and regulatory proceedings, the Company can estimate possible losses, or, range of loss in excess of amounts accrued, but does not believe, based on current knowledge and after consultation with counsel, that such losses individually or in the aggregate, will have a material adverse effect on the Company’s condensed consolidated financial statements as a whole. For legal proceedings where there is at least a reasonable possibility that a loss or an additional loss may be incurred, the Company estimates a range of aggregate loss in excess of amounts accrued of $0 to approximately $24 million. This estimated aggregate range is based upon currently available information for those legal proceedings in which the Company is involved, where an estimate for such losses can be made. For certain cases, the Company does not believe that an estimate can currently be made. The foregoing estimate is based on various factors, including the varying stages of the proceedings (including the fact that many are currently in preliminary stages), the numerous yet-unresolved issues in many of the proceedings and the attendant uncertainty of the various potential outcomes of such proceedings. Accordingly, the Company’s estimate will change from time to time, and actual losses may be more than the current estimate. On October 25, 2013, the Company executed a settlement agreement with the receiver appointed by a state district court in Oklahoma to oversee a liquidation proceeding of Providence Property and Casualty Insurance Company in an action that was filed in March 2010. The Company agreed to a settlement amount of $10.0 million. The Company recovered insurance proceeds of $4.9 million reducing its net amount due under the settlement agreement to $5.1 million. In addition, the Company agreed to pay $500,000 in full and final settlement of any claims the receiver may have had in an action filed by the receiver in connection with an affiliated insurance company. Both of these settlement agreements are subject to court approval and are fully independent of each other. The Company was fully reserved for both of these contingencies as of September 30, 2013. The impact of these matters on litigation expenses during the third quarter of 2013 was $2.3 million which is included in other expenses on the condensed consolidated statement of operations.

9. Contingencies

Many aspects of the Company’s business involve substantial risks of liability. In the normal course of business, the Company has been named as defendant or co-defendant in various legal actions, including arbitrations, class actions, and other litigation, creating substantial exposure. Certain of the actual or threatened legal matters include claims for substantial compensatory and/or punitive damages or claims for indeterminate amounts of damages. These proceedings arise primarily from securities brokerage, asset management and investment banking activities. The Company is also involved, from time to time, in other reviews, investigations and proceedings (both formal and informal) by governmental and self-regulatory agencies regarding the Company’s business which may result in adverse judgments, settlements, fines, penalties, injunctions or other relief. The investigations include, among other things, inquiries from the SEC, the Financial Industry Regulatory Authority (“FINRA”) and various state regulators. The Company is named as a respondent in a number of arbitrations by its current or former clients as well as lawsuits related to its sale of ARS.

The Company accrues for estimated loss contingencies related to legal and regulatory matters when available information indicates that it is probable a liability had been incurred at the date of the condensed consolidated financial statements and the Company can reasonably estimate the amount of that loss. In many proceedings, however, it is inherently difficult to determine whether any loss is probable or even possible or to estimate the amount of any loss. In addition, even where loss is possible or an exposure to loss exists in excess of the liability already accrued with respect to a previously recognized loss contingency, it is often not possible to reasonably estimate the size of the possible loss or range of loss or possible additional losses or range of additional losses.

For certain legal and regulatory proceedings, the Company cannot reasonably estimate such losses, particularly for proceedings that are in their early stages of development or where plaintiffs seek substantial, indeterminate or special damages. Numerous issues may need to be reviewed, analyzed or resolved, including through potentially lengthy discovery and determination of important factual matters, and by addressing novel or unsettled legal questions relevant to the proceedings in question, before a loss or range of loss or additional loss can be reasonably estimated for any proceeding. Even after lengthy review and analysis, the Company, in many legal and regulatory proceedings, may not be able to reasonably estimate possible losses or range of loss.

For certain other legal and regulatory proceedings, the Company can estimate possible losses, or, range of loss in excess of amounts accrued, but does not believe, based on current knowledge and after consultation with counsel, that such losses individually or in the aggregate, will have a material adverse effect on the Company’s condensed consolidated financial statements as a whole.

For legal proceedings where there is at least a reasonable possibility that a loss or an additional loss may be incurred, the Company estimates a range of aggregate loss in excess of amounts accrued of $0 to approximately $24 million. This estimated aggregate range is based upon currently available information for those legal proceedings in which the Company is involved, where an estimate for such losses can be made. For certain cases, the Company does not believe that an estimate can currently be made. The foregoing estimate is based on various factors, including the varying stages of the proceedings (including the fact that many are currently in preliminary stages), the numerous yet-unresolved issues in many of the proceedings and the attendant uncertainty of the various potential outcomes of such proceedings. Accordingly, the Company’s estimate will change from time to time, and actual losses may be more than the current estimate.

On October 25, 2013, the Company executed a settlement agreement with the receiver appointed by a state district court in Oklahoma to oversee a liquidation proceeding of Providence Property and Casualty Insurance Company in an action that was filed in March 2010. The Company agreed to a settlement amount of $10.0 million. The Company recovered insurance proceeds of $4.9 million reducing its net amount due under the settlement agreement to $5.1 million. In addition, the Company agreed to pay $500,000 in full and final settlement of any claims the receiver may have had in an action filed by the receiver in connection with an affiliated insurance company. Both of these settlement agreements are subject to court approval and are fully independent of each other. The Company was fully reserved for both of these contingencies as of September 30, 2013. The impact of these matters on litigation expenses during the third quarter of 2013 was $2.3 million which is included in other expenses on the condensed consolidated statement of operations.