v3.25.1
Earnings Per Share - Summary of Numerator and Denominator of Basic and Fully Diluted Earnings Per Common Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income $ 74,230 $ 56,956
Less: Net income attributable to redeemable noncontrolling interest 0 (10,149)
Less: Net income attributable to noncontrolling interests (4,546) 804
Net income attributable to HCI 69,684 47,611
Less: Income attributable to participating securities (3,103) (1,218)
Basic Earnings Per Share:    
Income allocated to common stockholders (Numerator) $ 66,581 $ 46,393
Income allocated to common stockholders, shares (Denominator) [1] 10,286 9,751
Basic earnings per share $ 6.47 $ 4.76
Diluted Earnings Per Share:    
Income available to common stockholders and assumed conversions (Numerator) $ 68,454 $ 48,033
Income available to common stockholders and assumed conversions (Denominator) [1] 12,785,000 12,618,000
Diluted earnings per share $ 5.35 $ 3.81
Warrant [Member]    
Diluted Earnings Per Share:    
Dilutive Securities, Shares (Denominator) [1]   305,000
Dilutive Securities, Shares (Denominator) [1] 7,000  
Convertible Senior Notes [Member]    
Diluted Earnings Per Share:    
Convertible senior notes (Numerator) $ 1,873 $ 1,640
Dilutive Securities, Shares (Denominator) [1] 2,142,000 2,282,000
Employee Stock Option    
Diluted Earnings Per Share:    
Dilutive Securities, Shares (Denominator) [1] 350,000 280,000
[1] Shares in thousands