XML 106 R89.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 14, 2022 | Feb. 15, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Feb. 07, 2022 | Jan. 27, 2022
Subsequent Event [Line Items] |  |  |  |  |  |  |
Dividends paid |  |  | $ 105,764 | $ 207,765 | $ 109,147 |  |
Class B | HFML | Forecast |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Shares to be issued for acquisition of interest held in employee benefit trust | 1.5 |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Dividends declared (usd per share) |  |  |  |  |  |  | $ 0.27
Dividends paid |  | $ 25,000 |  |  |  |  |
Subsequent Event | HFML |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Percentage of equity interests held in employee benefit trust |  |  |  |  |  | 10.00% |

X
- Definition Equity Acquisition, Percentage Of Equity Interests Held In Employee Benefit Trust + References No definition available. + Details
Name: | fhi_EquityAcquisitionPercentageOfEquityInterestsHeldInEmployeeBenefitTrust
Namespace Prefix: | fhi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Noncontrolling Interest, Acquisition Of Additional Equity, Shares Issued + References No definition available. + Details
Name: | fhi_NoncontrollingInterestAcquisitionOfAdditionalEquitySharesIssued
Namespace Prefix: | fhi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
Name: | us-gaap_DividendsPayableAmountPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDividendsCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=fhi_HermesFundManagersLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |