Annual report [Section 13 and 15(d), not S-K Item 405]

Stock-Based Compensation - Narrative (Details)

v3.25.0.1
Stock-Based Compensation - Narrative (Details) - USD ($)
shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years) 3 years    
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years) 5 years    
Common Stock | Landsea Homes Corporation 2020 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) 6,000    
Number of shares available for future issuance (in shares) 2,700    
Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance range of target goals greater than     200.00%
Performance Shares | Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance measured by cumulative revenue and return on equity 3 years 3 years  
Performance Shares | Minimum | Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance measured by cumulative revenue and return on equity     3 years
Performance Shares | Maximum | Executive Officer      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance measured by cumulative revenue and return on equity     5 years
Performance Shares | Landsea Homes Corporation 2020 Stock Incentive Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance range of target goals 50.00% 50.00% 50.00%
Performance Shares | Landsea Homes Corporation 2020 Stock Incentive Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance range of target goals 200.00% 200.00% 400.00%
Restricted Stock Units and Performance Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grants in period (in shares) 533 298  
Restricted Stock Units and Performance Stock Units | General and Administrative Expense      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 3.5 $ 3.1 $ 3.6
Share-Based Payment Arrangement, Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total intrinsic value of options exercised (less than) $ 0.5 $ 0.1 $ 0.0