Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Roll-Forward of Outstanding Restricted Stock Grants Issued
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
Expense Recognition of Deferred Compensation
Schedule of Expense Recognition of Deferred Compensation Arrangement [Table Text Block]
Schedule of expense recognition of deferred compensation arrangement.
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value [Table Text Block]
Leases [Abstract]
Lease and operating expenses
Operating Leases, Rent Expense, Net
Debt Disclosure [Abstract]
Line of Credit
Debt Disclosure [Text Block]
Accounting Policies [Abstract]
Mutual fund administration:
Mutual Fund Administration [Abstract]
Mutual Fund Administration [Abstract]
Administration revenue, gross
Administrative Services Revenue
Fund related expense
Fund Related Expense
Fund related expense.
Revenue, net of related expenses
Revenue from Administrative Services Excluding Financial Activity Net
Revenue from administrative services excluding financial activity net.
Share Financing [Abstract]
Share Financing [Abstract]
Broker commission advance repayments
Broker Commission Advance Repayments
Broker commission advance repayments.
Broker commission amortization
Broker Commission Amortization
Broker commission amortization.
Financing activity, net
Financing Activity Net
Financing activity, net.
Mutual fund administration revenue, net
Revenue from Administrative Services Net
Revenue from administrative services net.
Statement of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Investment portfolio
Investments
Accounts receivable
Accounts Receivable, Net
Prepaid expenses
Prepaid Expense
Income taxes receivable
Income Taxes Receivable, Current
Property and equipment, net of depreciation
Property, Plant and Equipment, Net
Deferred taxes
Deferred Tax Assets, Net of Valuation Allowance
Total assets
Assets
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities and Equity [Abstract]
Liabilities
Liabilities [Abstract]
Accounts payable and accrued expenses
Accounts Payable and Accrued Liabilities
Accrued incentive compensation
Accrued Bonuses, Current
Deferred compensation
Deferred Compensation Liability, Current and Noncurrent
Income taxes payable
Taxes Payable, Current
Total liabilities
Liabilities
Redeemable noncontrolling interest
Redeemable Noncontrolling Interest, Equity, Common, Fair Value
Permanent Shareholders’ equity
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, no par value 7,000,000 shares authorized; 3,534,148 issued and outstanding at September 30, 2018 (inclusive of 207,500 unvested shares); 3,470,428 issued and outstanding at December 31, 2017 (inclusive of 191,900 unvested shares)
Common Stock, Value, Issued
Preferred stock, undesignated, 1,000,000 shares authorized and unissued
Preferred Stock, Value, Issued
Deferred equity compensation
Deferred Compensation Equity
Retained earnings
Retained Earnings (Accumulated Deficit)
Total permanent shareholders’ equity
Stockholders' Equity Attributable to Parent
Total liabilities and shareholders’ equity
Liabilities and Equity
Book value per share (usd per share)
Book Value Per Share
Book value per share is computed by dividing total shareholders' equity by the number of shares issued and outstanding at the end of the measurement period.
Statement of Cash Flows [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net Income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation
Depreciation
Share-based compensation
Share-based Compensation
(Increase) decrease in accounts receivable
Increase (Decrease) in Accounts Receivable
Change in current income taxes
Increase (Decrease) in Income Taxes Payable
Change in deferred income taxes
Increase (Decrease) in Deferred Income Taxes
Net gains on investments
Gain (Loss) on Investments
Net change in securities held by Consolidated Funds
Increase (Decrease) in Trading Securities
Increase in accrued incentive compensation
Increase (Decrease) in Employee Related Liabilities
Increase in deferred compensation
Increase (Decrease) in Deferred Compensation
Other changes in assets and liabilities
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
CASH FLOWS FROM INVESTING ACTIVITIES:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment
Payments to Acquire Property, Plant, and Equipment
Purchase of Company sponsored investments
Payments to Acquire Investments
Proceeds from sale of Company sponsored investments
Proceeds from Sale, Maturity and Collection of Investments
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
CASH FLOWS FROM FINANCING ACTIVITIES:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Value of shares withheld related to employee tax withholding
Payments Related to Tax Withholding for Share-based Compensation
Net subscriptions received from redeemable noncontrolling interest holders
Proceeds from (Payments to) Noncontrolling Interests
Net cash provided by financing activities
Net Cash Provided by (Used in) Financing Activities
CASH AND CASH EQUIVALENTS
Cash and Cash Equivalents, at Carrying Value [Abstract]
Net change during the period
Cash and Cash Equivalents, Period Increase (Decrease)
At beginning of period
At end of period
Supplemental cash flow information:
Supplemental Cash Flow Information [Abstract]
Income taxes paid
Income Taxes Paid
Supplemental disclosure of non-cash transactions:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Common stock issued as incentive compensation
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Charitable donation of corporate investments and property and equipment
Contribution of Investments and Property and Equipment
Value of investments and property and equipment contributed in noncash investing and financing activities.
Net subscriptions (redemptions) of ETF shares for marketable securities
Net issuance of ETF shares for marketable securities
Value of ETF shares issued in exchange for marketable securities.
Investments, Debt and Equity Securities [Abstract]
Summary of Market Value of Investments
Summary Investment Holdings [Table Text Block]
Equity Method Investments
Equity Method Investments [Table Text Block]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Award Type [Axis]
Award Type [Axis]
Equity Award [Domain]
Equity Award [Domain]
Restricted Stock Units (RSUs)
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2018 (Remaining Period)
Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized Current
Employee service share based compensation nonvested awards compensation cost not yet recognized current.
2019
Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized in Year One
Employee service share based compensation nonvested awards compensation cost not yet recognized in year one.
2020
Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized in Year Two
Employee service share based compensation nonvested awards compensation cost not yet recognized in year two.
2021
Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized in Year Three
Employee service share based compensation nonvested awards compensation cost not yet recognized in year three.
2022
Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized in Year Four
Employee service share based compensation nonvested awards compensation cost not yet recognized in year four
Thereafter
Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized in Year Five
Employee service share based compensation nonvested awards compensation cost not yet recognized in year five.
Total
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Fair Value Measurements, Recurring and Nonrecurring
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Disaggregation of Revenue
Disaggregation of Revenue [Table Text Block]
Assets under Management (AUM) Subject to Incentive Fees and Incentive Fees
Assets Under Management Variable Performance Fees [Table Text Block]
Assets under management (AUM) subject to variable performance fees and variance performance fees.
Mutual Fund Administration Gross and Net Revenue
Mutual Fund Administration Gross and Net Revenue [Table Text Block]
Mutual fund administration gross and net revenue.
Total assets
Equity Method Investment, Summarized Financial Information, Assets
Total liabilities
Equity Method Investment, Summarized Financial Information, Liabilities
Net assets
Equity Method Investment Summarized Financial Information, Equity
DHCM's portion of net assets
Equity Method Investment, Underlying Equity in Net Assets
Investment Income
Equity Method Investment, Summarized Financial Information, Revenue
Expenses
Equity Method Investment, Summarized Financial Information, Expenses
The amount of expenses reported by an equity method investment of the entity.
Net realized gains (losses)
Equity Method Investment, Summarized Financial Information, Net realized gains (losses)
The amount of net realized gains (losses) reported by an equity method investment of the entity.
Net change in unrealized appreciation/depreciation
Equity Method Investment, Summarized Financial Information, Net change in unrealized appreciation/depreciation
The amount of net change in unrealized appreciation/depreciation reported by an equity method investment of the entity.
Net income
Equity Method Investment, Summarized Financial Information, Net Income (Loss)
DHCM's portion of net income
Income (Loss) from Equity Method Investments
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Major Types of Debt and Equity Securities [Axis]
Major Types of Debt and Equity Securities [Axis]
Major Types of Debt and Equity Securities [Domain]
Major Types of Debt and Equity Securities [Domain]
Securities held in Consolidated Funds
Securities held in Consolidated Funds [Member]
Securities held in Consolidated Funds [Member]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurements, Recurring
Fair Value, Measurements, Recurring [Member]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Fair Value, Inputs, Level 1
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 2
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
Fair value investments
Investment Owned, at Fair Value
Compensation Plans
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Income Tax Disclosure [Abstract]
Income Taxes
Income Tax Disclosure [Text Block]
Earnings Per Share [Abstract]
Computation for Earnings Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Area of operating lease
Lessee Leasing Agreements, Operating Leases, Area under Lease
Lessee Leasing Agreements, Operating Leases, Area under Lease
Number of office space locations
Lessee Leasing Agreements, Operating Leases, locations
Lessee Leasing Agreements, Operating Leases, locations
Operating lease expense excluding rent
Operating Lease Expense Excluding Rent
Operating Lease Expense Excluding Rent
Subsequent Events [Abstract]
Subsequent Event [Table]
Subsequent Event [Table]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Subsequent Event [Member]
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Dividends declared (in usd per share)
Common Stock, Dividends, Per Share, Declared
Dividends to be paid in cash
Dividends, Common Stock, Cash
Investment Portfolio
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Common stock, par value (usd per share)
Common Stock, No Par Value
Common stock, shares authorized
Common Stock, Shares Authorized
Common stock, shares issued
Common Stock, Shares, Issued
Common stock, shares outstanding
Common Stock, Shares, Outstanding
Preferred stock, shares authorized
Preferred Stock, Shares Authorized
Preferred stock, shares issued
Preferred Stock, Shares Issued
Preferred Stock, shares Outstanding
Preferred Stock, Shares Outstanding
Unvested shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Investment Holdings [Table]
Investment Holdings [Table]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Parent
Parent [Member]
Redeemable Noncontrolling Interest
Noncontrolling Interest [Member]
Investment Holdings [Line Items]
Investment Holdings [Line Items]
Company sponsored equity method investments
Equity Method Investments
Total Investment portfolio
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Customer [Axis]
Customer [Axis]
Customer [Domain]
Customer [Domain]
Proprietary funds
Proprietary Funds [Member]
Proprietary Funds [Member]
Sub-advised funds and institutional accounts
Sub-advised Funds And Institutional Accounts [Member]
Sub-advised Funds And Institutional Accounts [Member]
Products and Services [Axis]
Products and Services [Axis]
Products and Services [Domain]
Products and Services [Domain]
Investment advisory
Investment Advisory Services [Member]
Investment Advisory Services [Member]
Mutual fund administration, net
Mutual Fund Administrative Services [Member]
Mutual fund administrative services [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Revenue earned
Revenue from Contract with Customer, Excluding Assessed Tax
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Organization
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Summary of Total Lease and Operating Expenses
Lessee, Operating Lease, Disclosure [Table Text Block]
Future Minimum Lease Payments under Operating Leases
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Subsequent Events
Subsequent Events [Text Block]
Statement [Table]
Statement [Table]
Redeemable Noncontrolling Interest
Statement [Line Items]
Statement [Line Items]
New consolidations of Company sponsored investments
Noncontrolling Interest, Increase from Consolidation
The amount of the increase during the period of a noncontrolling interest resulting from the parent's increase in control and consolidation of the entity in which one or more outside parties had a noncontrolling interest.
Document And Entity Information [Abstract]
Document And Entity Information [Abstract]
Document Type
Document Type
Amendment Flag
Amendment Flag
Document Period End Date
Document Period End Date
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding shares, Beginning Balance (shares)
Shares issued (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Grants vested (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Grants forfeited (shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Outstanding shares, Ending Balance (shares)
Weighted-Average Grant Date Price per Share
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Grant Date Price per Share, Beginning of Period (usd per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Weighted-Average Grant Date Price per Share, Grants issued (usd per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted-Average Grant Date Price per Share, Grants vested (usd per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Weighted-Average Grant Date Price per Share, Grants forfeited (usd per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Weighted-Average Grant Date Price per Share, End of Period (usd per share)
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
The Credit Agreement
The Credit Agreement [Member]
The Credit Agreement [Member]
Credit Facility [Axis]
Credit Facility [Axis]
Credit Facility [Domain]
Credit Facility [Domain]
Line of Credit
Line of Credit [Member]
Variable Rate [Axis]
Variable Rate [Axis]
Variable Rate [Domain]
Variable Rate [Domain]
London Interbank Offered Rate (LIBOR)
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Maximum borrowing amount
Line of Credit Facility, Maximum Borrowing Capacity
Line of credit facility, interest rate description
Debt Instrument, Basis Spread on Variable Rate
Borrowing under line of credit facility
Long-term Line of Credit, Noncurrent
Line of credit, unused capacity, commitment fee percentage
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Business Organization And Significant Accounting Policies [Table]
Business Organization And Significant Accounting Policies [Table]
Business Organization And Significant Accounting Policies [Table]
Money Market Funds
Money Market Funds [Member]
Business Organization And Significant Accounting Policies [Line Items]
Business Organization And Significant Accounting Policies [Line Items]
[Line Items] for Business Organization And Significant Accounting Policies [Table]
Number of business segment
Number of Operating Segments
Allowance for doubtful accounts
Allowance for Doubtful Accounts Receivable
Accounts receivable, related parties
Accounts Receivable, Related Parties
Transfers between Level 1, Level 2, or Level 3, amount
Fair Value, Transfers Between Level 1, Level 2, or Level 3, Amount
Fair Value, Transfers Between Level 1, Level 2, or Level 3, Amount
Client performance period
Rolling Client Investment Performance Period
Rolling Client Investment Performance Period
Variable fees
Performance Fees
Advance commissions amortization period
Advance Commissions Amortization Period
Advance commissions amortization period.
Liability for uncertain tax positions
Liability for Uncertainty in Income Taxes, Current
Principal Transaction Revenue [Table]
Principal Transaction Revenue [Table]
Principal Transaction Revenue, Description of Reporting Category [Axis]
Principal Transaction Revenue, Description of Reporting Category [Axis]
Name of Reporting Category [Domain]
Name of Reporting Category [Domain]
Quarter Ending December 31, 2018
Asset Under Management Contractual Period End Date [Member]
Asset under management contractual period end date.
Quarter Ending September 30, 2019
Asset Under Management Contractual Period End Date 2 [Member]
Asset Under Management Contractual Period End Date 2 [Member]
Quarter Ending March 31, 2020
Asset Under Management Contractual Period End Date 3 [Member]
Asset Under Management Contractual Period End Date 3 [Member]
Quarter Ending September 30, 2021
Asset Under Management Contractual Period End Date 4 [Member]
Asset Under Management Contractual Period End Date 4 [Member]
Total
Asset Under Management Contractual Period End Total [Member]
Asset Under Management Contractual Period End Total
Principal Transaction Revenue [Line Items]
Principal Transaction Revenue [Line Items]
AUM subject to variable rate fees
Assets Under Management Variable Performance Fees
Assets under management (AUM) subject to variable performance fees and variable performance fees.
Unearned variable rate fees
Potential Variable Fees Based Upon Current Investment Results
Potential Variable Fees Based Upon Current Investment Results
Earnings Per Share
Earnings Per Share [Text Block]
Schedule of Equity Method Investments [Table]
Schedule of Equity Method Investments [Table]
Investment Type [Axis]
Investment Type [Axis]
Investments [Domain]
Investments [Domain]
Research Opportunities Fund
Research Opportunities Fund [Member]
Research opportunities fund.
International Equity Fund LP
International Equity Fund LP [Member]
International Equity Fund LP
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage
Equity Method Investment, Ownership Percentage
Net Income
Less: Net income attributable to redeemable noncontrolling interest
Net Income (Loss) Attributable to Noncontrolling Interest
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS
Net Income (Loss) Attributable to Parent
Weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average number of outstanding shares - Basic (in shares)
Weighted Average Number of Shares Outstanding, Basic
Dilutive impact of restricted stock units (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Weighted average number of outstanding shares - Diluted (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Earnings per share
Earnings Per Share, Basic and Diluted [Abstract]
Basic (USD per share)
Earnings Per Share, Basic
Diluted (USD per share)
Earnings Per Share, Diluted
Statement of Stockholders' Equity [Abstract]
Total
Common Stock
Common Stock [Member]
Deferred Equity Compensation
Deferred Compensation, Share-based Payments [Member]
Retained Earnings
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (shares)
Beginning Balance
Issuance of restricted stock grants (shares)
Stock Issued During Period, Shares, Restricted Stock Award, Gross
Issuance of restricted stock grants
Stock Issued During Period, Value, Restricted Stock Award, Gross
Amortization of restricted stock grants
Amortization Of Restricted Stock Grants
Amortization of restricted stock grants.
Issuance of stock grants (shares)
Issuance of stock grants
Issuance of common stock related to 401k plan match (shares)
Stock Issued During Period, Shares, New Issues
Issuance of common stock related to 401k plan match
Stock Issued During Period, Value, New Issues
Shares withheld related to employee tax withholding (shares)
Shares Paid for Tax Withholding for Share Based Compensation
Shares withheld related to employee tax withholding
Adjustments Related to Tax Withholding for Share-based Compensation
Forfeiture of restricted stock grants (shares)
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
Forfeiture of restricted stock grants
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures
Net income
Ending balance (shares)
Ending Balance
Increase (Decrease) in Temporary Equity [Roll Forward]
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance attributable to redeemable noncontrolling Interests
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Net Income Attributable to Redeemable Noncontrolling Interest
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest
Net subscriptions of consolidated funds
Subscription From Redemption Distribution To Noncontrolling Interest
A positive value represents subscriptions net of redemptions and distributions to redeemable non-controlling interest holders. A negative value represents redemptions and distributions paid to redeemable non-controlling interest holders net of subscriptions received.
Ending balance attributable to redeemable noncontrolling Interests
Operating Leases
Leases of Lessee Disclosure [Text Block]
Shares Issued
Shares Outstanding [Member]
Shares outstanding.
Grant Date Value
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum
Minimum [Member]
2014 Equity and Cash Incentive Plan
Equity and Cash Incentive Plan [Member]
2011 equity and cash incentive plan.
Common shares available for issuance (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Deferred compensation equity
Fully vested employee elected deferral period
Deferred Compensation Arrangement, Fully Vested Employee Elected Deferral Period
Deferred Compensation Arrangement, Fully Vested Employee Elected Deferral Period
Deferred compensation liability
Significant Accounting Policies
Significant Accounting Policies [Text Block]
Income Statement [Abstract]
REVENUES:
Revenues [Abstract]
Investment advisory
Investment Advisory Fees
Mutual fund administration, net
Total revenue
Revenues
OPERATING EXPENSES:
Operating Expenses [Abstract]
Compensation and related costs
Labor and Related Expense
General and administrative
General and Administrative Expense
Sales and marketing
Selling and Marketing Expense
Mutual fund administration
Asset Management Costs
Total operating expenses
Operating Expenses
NET OPERATING INCOME
Operating Income (Loss)
Investment income, net
Investment Income, Net
INCOME BEFORE TAXES
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Income tax expense
Income Tax Expense (Benefit)
NET INCOME
Earnings per share attributable to common shareholders
Basic (in shares)
Diluted (in shares)
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Reclassification
Reclassification, Policy [Policy Text Block]
Principles of Consolidation
Consolidation, Policy [Policy Text Block]
Redeemable Noncontrolling Interest
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]
Segment Information
Segment Reporting, Policy [Policy Text Block]
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Accounts Receivable
Receivables, Policy [Policy Text Block]
Investments
Investment, Policy [Policy Text Block]
Fair Value Measurements
Fair Value Measurement, Policy [Policy Text Block]
Property and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Revenue Recognition - General
Revenue Recognition, Policy [Policy Text Block]
Revenue Recognition - Investment Advisory and Variable Incentive Revenue
Revenue Recognition, Services, Management Fees [Policy Text Block]
Revenue Recognition - Mutual Fund Administration
Revenue Recognition Accounting Policy, Gross and Net Revenue Disclosure [Policy Text Block]
Income Taxes
Income Tax, Policy [Policy Text Block]
Earnings Per Share
Earnings Per Share, Policy [Policy Text Block]
Newly Issued But Not Yet Adopted Accounting Guidance
New Accounting Pronouncements, Policy [Policy Text Block]
Remainder of 2018
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year
2019
Operating Leases, Future Minimum Payments, Due in Two Years
2020
Operating Leases, Future Minimum Payments, Due in Three Years
2021
Operating Leases, Future Minimum Payments, Due in Four Years
2022
Operating Leases, Future Minimum Payments, Due in Five Years
Thereafter
Operating Leases, Future Minimum Payments, Due Thereafter
Total future lease payments due
Operating Leases, Future Minimum Payments Due
Income tax expense (benefit)
Effective tax rate
Effective Income Tax Rate Reconciliation, Percent
Federal statutory income tax rate, percent
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Effective income tax rate reconciliation, share-based compensation, excess tax benefit (tax shortfall), Amount
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit (Tax Shortfall), Amount
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit (Tax Shortfall), Amount
Valuation allowance
Deferred Tax Assets, Valuation Allowance