Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Schedule of Diluted Earnings Per Share by Common Class (Detail)

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Earnings Per Share - Schedule of Diluted Earnings Per Share by Common Class (Detail)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2023
units
shares
Jun. 30, 2024
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
$ / shares
shares
Numerator          
Net income (loss) from discontinued operations attributable to holders of Class A Common Stock - basic | $   $ (105) $ 479 $ (2,008) $ (15,194)
Reallocation of net loss from discontinued operations assuming exchange of Class A LLC Units | $   (73) 0 (2,034) 0
Net income (loss) from discontinued operations attributable to holders of Class A Common Stock - diluted | $   $ (178) $ 479 $ (4,042) $ (15,194)
Denominator          
Weighted average shares of Class A Common Stock outstanding - basic (in shares)   9,898,182 8,740,986 9,773,370 7,577,797
Forward sale share contracts - dilutive shares under the treasury stock method (in shares)   0 0 0 0
Weighted average shares of Class A Common Stock outstanding - diluted (in shares)   23,084,189 8,740,986 23,013,742 7,577,797
Diluted net income (loss) per share          
Continuing operations (in USD per shares) | $ / shares   $ (0.29) $ (9.11) $ (0.88) $ (8.04)
Discontinued operations (in usd per share) | $ / shares   (0.01) 0.06 (0.18) (2.00)
Diluted net income (loss) per share (in USD per share) | $ / shares   $ (0.30) $ (9.05) $ (1.06) $ (10.04)
Exchange ratio       1  
Exchange Agreement          
Diluted net income (loss) per share          
Weighted-average anti-dilutive securities excluded from the computation of diluted earnings per share (in shares)     14,158,813   13,292,218
Restricted Stock Units (RSUs)          
Diluted net income (loss) per share          
Weighted-average anti-dilutive securities excluded from the computation of diluted earnings per share (in shares)   0 181,599 0 91,301
Forward Contracts          
Diluted net income (loss) per share          
Weighted-average anti-dilutive securities excluded from the computation of diluted earnings per share (in shares)   0 0 0 105,623
American Advisors Group (AAG) | Class A LLC Units          
Diluted net income (loss) per share          
Contingent equity consideration, number of types | units 2        
American Advisors Group (AAG) | Class A LLC Units, Liability Classified          
Diluted net income (loss) per share          
Contingent equity consideration (in shares) 705,841        
American Advisors Group (AAG) | Class A LLC Units, Equity Classified, Indemnity Holdback          
Diluted net income (loss) per share          
Contingent equity consideration (in shares) 714,226        
Class A Common Stock          
Numerator          
Net loss from continuing operations attributable to holders of Class A Common Stock - basic | $   $ (1,984) $ (79,619) $ (7,619) $ (60,892)
Reallocation of net loss from continuing operations assuming exchange of Class A LLC Units | $   (4,869) 0 (12,643) 0
Net loss from continuing operations attributable to holders of Class A Common Stock - diluted | $   $ (6,853) $ (79,619) $ (20,262) $ (60,892)
Denominator          
Weighted average shares of Class A Common Stock outstanding - basic (in shares)   9,898,182 8,740,986 9,773,370 7,577,797
Assumed exchange of weighted average Class A LLC Units for shares of Class A Common Stock (in shares)   13,186,007 0 13,240,372 0
Weighted average shares of Class A Common Stock outstanding - diluted (in shares)   23,084,189 8,740,986 23,013,742 7,577,797
Diluted net income (loss) per share          
Diluted net income (loss) per share (in USD per share) | $ / shares   $ (0.30) $ (9.05) $ (1.06) $ (10.04)
Award vesting cost responsibility (in percent)   85.00%   85.00%