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expenses Accounts Payable and Accrued Liabilities Customer relationships Customer Relationships [Member] Entity Address, City or Town Entity Address, City or Town Retirement Plans Retirement Benefits [Text Block] Leases [Abstract] Subsegments [Axis] Subsegments [Axis] Operating Expenses Operating Expenses [Abstract] Operating Expenses [Abstract] Mutual funds Mutual Fund [Member] Total shareholders' equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Consolidation Consolidation, Policy [Policy Text Block] Asset Class [Domain] Asset Class [Domain] Minimum Minimum [Member] Non-controlling interest in subsidiaries Stockholders' Equity Attributable to Noncontrolling Interest Earn-outs Earn-Outs [Member] Earn-Outs Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Occupancy costs Occupancy, Net Common stock, par value (in dollars per share) Common Stock, Par or Stated 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