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Subsequent Events - Additional Information (Details) - USD ($) $ in Millions |  |  |  | 2 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 | Feb. 11, 2021 | Jan. 01, 2021 | Feb. 16, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Subsequent Event [Line Items] |  |  |  |  |  |
Business acquisition, annualized revenue |  |  |  |  | $ 45.2 | $ 17.4
Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Stock repurchased (in shares) |  |  |  | 600,000 |  |
Stock repurchased, value |  |  |  | $ 16.2 |  |
Stock repurchase program duration |  | 17 years |  |  |  |
Subsequent Event | Forecast |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Stock repurchase program authorized to be repurchased (in shares) | 5,000,000.0 |  |  |  |  |
Renewal period of share repurchase | 1 year |  |  |  |  |
Subsequent Event | Forecast | Middle Market Advisory Group |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Business acquisition, annualized revenue |  |  | $ 3.6 |  |  |

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- Definition Stock Repurchase Program, Program Duration + References No definition available. + Details
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- 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
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