0618 - Disclosure - Regulatory Authorities (Details Textual) link:presentationLink link:calculationLink link:definitionLink 06061 - Disclosure - Derivatives (Details 1) link:presentationLink link:calculationLink link:definitionLink 0606 - Disclosure - Derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 0608 - Disclosure - Property - Net (Details) link:presentationLink link:calculationLink link:definitionLink 0508 - Disclosure - Property - Net (Tables) link:presentationLink link:calculationLink link:definitionLink 0208 - Disclosure - Property - Net link:presentationLink link:calculationLink link:definitionLink 06135 - Disclosure - Incentive Plans (Details 5) link:presentationLink link:calculationLink link:definitionLink 06141 - Disclosure - Employee Benefit Plans (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0614 - Disclosure - Employee Benefit Plans (Details) link:presentationLink link:calculationLink link:definitionLink 06136 - Disclosure - Incentive Plans (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0607 - Disclosure - Business Acquisitions (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0514 - Disclosure - Employee Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 0513 - Disclosure - Incentive Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 0506 - Disclosure - Derivatives (Tables) link:presentationLink link:calculationLink link:definitionLink 0611 - Disclosure - Commitments and Contingencies (Details Textual) link:presentationLink link:calculationLink link:definitionLink 06101 - Disclosure - Senior Debt (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0509 - Disclosure - Goodwill and Other Intangible Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 06094 - Disclosure - Goodwill and Other Intangible Assets (Details Textual) link:presentationLink link:calculationLink link:definitionLink 06093 - Disclosure - Goodwill and Other Intangible Assets (Details 3) link:presentationLink link:calculationLink link:definitionLink 06092 - Disclosure - Goodwill and Other Intangible Assets (Details 2) link:presentationLink link:calculationLink link:definitionLink 06091 - Disclosure - Goodwill and Other Intangible Assets (Details 1) link:presentationLink link:calculationLink link:definitionLink 0609 - Disclosure - Goodwill and Other Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 0603 - Disclosure - Receivables - Net (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0601 - Disclosure - Organization and Basis of Presentation (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0402 - Disclosure - Recent Accounting Developments (Policies) link:presentationLink link:calculationLink link:definitionLink 0151 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0150 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0140 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0131 - Statement - Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0111 - Statement - Condensed Consolidated Statements of Financial Condition (Parenthetical) (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0110 - Statement - Condensed Consolidated Statements of Financial Condition (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0619 - Disclosure - Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 0519 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 06171 - Disclosure - Related Parties (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0617 - Disclosure - Related Parties (Details) link:presentationLink link:calculationLink link:definitionLink 0517 - Disclosure - Related Parties (Tables) link:presentationLink link:calculationLink link:definitionLink 0616 - Disclosure - Net Income Per Share of Class A Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 0516 - Disclosure - Net Income Per Share Of Class A Common Stock (Tables) link:presentationLink link:calculationLink link:definitionLink 0615 - Disclosure - Income Taxes (Details Textual) link:presentationLink link:calculationLink link:definitionLink 06134 - Disclosure - Incentive Plans (Details 4) link:presentationLink link:calculationLink link:definitionLink 06133 - Disclosure - Incentive Plans (Details 3) link:presentationLink link:calculationLink link:definitionLink 06132 - Disclosure - Incentive Plans (Details 2) link:presentationLink link:calculationLink link:definitionLink 06131 - Disclosure - Incentive Plans (Details 1) link:presentationLink link:calculationLink link:definitionLink 0613 - Disclosure - Incentive Plans (Details) link:presentationLink link:calculationLink link:definitionLink 06124 - Disclosure - Stockholders' Equity (Details Textual) link:presentationLink link:calculationLink link:definitionLink 06123 - Disclosure - Stockholders' Equity (Details 3) link:presentationLink link:calculationLink link:definitionLink 0512 - Disclosure - Stockholders' Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 06122 - Disclosure - Stockholders' Equity (Details 2) link:presentationLink link:calculationLink link:definitionLink 06121 - Disclosure - Stockholders' Equity (Details 1) link:presentationLink link:calculationLink link:definitionLink 0612 - Disclosure - Stockholders' Equity (Details) link:presentationLink link:calculationLink link:definitionLink 0510 - Disclosure - Senior Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 0610 - Disclosure - Senior Debt (Details) link:presentationLink link:calculationLink link:definitionLink 06053 - Disclosure - Fair Value Measurements (Details Textual) link:presentationLink link:calculationLink link:definitionLink 06052 - Disclosure - Fair Value Measurements (Details 2) link:presentationLink link:calculationLink link:definitionLink 06051 - Disclosure - Fair Value Measurements (Details 1) link:presentationLink link:calculationLink link:definitionLink 0605 - Disclosure - Fair Value Measurements (Details) link:presentationLink link:calculationLink link:definitionLink 0505 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 06042 - Disclosure - Investments (Details 2) link:presentationLink link:calculationLink link:definitionLink 06041 - Disclosure - Investments (Details 1) link:presentationLink link:calculationLink link:definitionLink 06043 - Disclosure - Investments (Details Textual) link:presentationLink link:calculationLink link:definitionLink 0604 - Disclosure - Investments (Details) link:presentationLink link:calculationLink link:definitionLink 0504 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 0219 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 0218 - Disclosure - Regulatory Authorities link:presentationLink link:calculationLink link:definitionLink 0217 - Disclosure - Related Parties link:presentationLink link:calculationLink link:definitionLink 0216 - Disclosure - Net Income Per Share of Class A Common Stock link:presentationLink link:calculationLink link:definitionLink 0215 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 0214 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 0213 - Disclosure - Incentive Plans link:presentationLink link:calculationLink link:definitionLink 0212 - Disclosure - Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 0211 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 0210 - Disclosure - Senior Debt link:presentationLink link:calculationLink link:definitionLink 0209 - Disclosure - Goodwill and Other Intangible Assets link:presentationLink link:calculationLink link:definitionLink 0207 - Disclosure - Business Acquisitions link:presentationLink link:calculationLink link:definitionLink 0206 - Disclosure - Derivatives link:presentationLink link:calculationLink link:definitionLink 0205 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 0204 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 0203 - Disclosure - Receivables - Net link:presentationLink link:calculationLink link:definitionLink 0202 - Disclosure - Recent Accounting Developments link:presentationLink link:calculationLink link:definitionLink 0201 - Disclosure - Organization and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 0130 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) link:presentationLink link:calculationLink link:definitionLink 0120 - Statement - Condensed Consolidated Statements of Operations (Unaudited) link:presentationLink link:calculationLink link:definitionLink 00 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink