Related Party Transactions (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended | | | | |
Aug. 31, 2023 USD ($) $ / shares shares | Jun. 30, 2023 USD ($) $ / shares shares | Jun. 30, 2022 USD ($) transaction $ / shares shares | Dec. 31, 2021 USD ($) | Jul. 31, 2021 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Jun. 01, 2022 shares | May 31, 2022 $ / shares | Jan. 31, 2022 USD ($) |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Due from affiliates | | | | | | $ 4,232,000 | | $ 4,232,000 | | $ 3,744,000 | | | |
Revenue | | | | | | 277,348,000 | $ 335,585,000 | 812,332,000 | $ 1,020,491,000 | | | | |
Right-of-use asset | | | | | | 12,900,000 | | 12,900,000 | | 15,600,000 | | | |
Lease liabilities | | | | | | 14,058,000 | | 14,058,000 | | 16,400,000 | | | |
Interest expense, related party | | | | | | 10,000,000 | 10,200,000 | 21,900,000 | 31,300,000 | | | | |
Real estate inventories | | | | | | 1,155,661,000 | | 1,155,661,000 | | 1,093,369,000 | | | |
California | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Revenue | | | | | | 103,982,000 | 118,977,000 | 270,756,000 | 343,466,000 | | | | |
Related party transaction, rate | | | | | 7% | | | | | | | | |
Private Placement Warrants | Landsea Holdings | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Stock repurchase program, authorized (in shares) | shares | | | 2,800,000 | | | | | | | | | | |
Green Investment Alpha Limited Share Repurchase Program | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Aggregate net proceeds from stock offering | $ 7,800,000 | | | | | | | | | | | | |
Green Investment Alpha Limited Share Repurchase Program | Public Stock Offering | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Shares sold in offering | shares | 800,000 | | | | | | | | | | | | |
Green Investment Alpha Limited Share Repurchase Program | IPO | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Share price (in dollars per share) | $ / shares | $ 9.75 | | | | | | | | | | | | |
Landsea Holding Share Repurchase Program | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Aggregate net proceeds from stock offering | | $ 3,300,000 | | | | | | | | | | | |
Landsea Holding Share Repurchase Program | Public Stock Offering | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Shares sold in offering | shares | | 443,478 | | | | | | | | | | | |
Landsea Holding Share Repurchase Program | IPO | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Share price (in dollars per share) | $ / shares | | $ 7.50 | | | | | | | | | | | |
Landsea Holding Share Repurchase Program | Landsea Holdings | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Number of transactions | transaction | | | 2 | | | | | | | | | | |
Stock repurchase program, authorized (in shares) | shares | | | | | | | | | | | 4,400,000 | | |
Stock repurchase program, authorized amount | | | $ 30,000,000 | | | | | | | | | | |
Stock consideration, share price (in dollars per share) | $ / shares | | | $ 6.82 | | | | | | | | | $ 7.18 | |
Discount rate | | | 5% | | | | | | | | | | |
Landsea Holding Share Repurchase Program | Private Placement Warrants | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Stock repurchase program, authorized (in shares) | shares | | | 5,500,000 | | | | | | | | | | |
Landsea Holding Share Repurchase Program | Private Placement Warrants | Landsea Holdings | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Stock repurchase program, authorized (in shares) | shares | | | 2,200,000 | | | | | | | | | | |
Stock repurchase program, authorized amount | | | $ 8,400,000 | | | | | | | | | | |
Stock consideration, share price (in dollars per share) | $ / shares | | | $ 3 | | | | | | | | | | |
Share Repurchase Program | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Stock repurchase program, authorized (in shares) | shares | | | 4,398,826 | | | | | | | | | | |
Stock repurchase program, authorized amount | | | $ 30,000,000 | | | | | | | | | | $ 10,000,000 |
Stock consideration, share price (in dollars per share) | $ / shares | | | $ 6.82 | | | | | | | | | | |
Share Repurchase Program | Private Placement Warrants | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Stock repurchase program, authorized amount | | | $ 16,500,000 | | | | | | | | | | |
Stock consideration, share price (in dollars per share) | $ / shares | | | $ 3 | | | | | | | | | | |
Share Repurchase Program | Private Placement Warrants | Landsea Holdings | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Stock repurchase program, authorized (in shares) | shares | | | 2,200,000 | | | | | | | | | | |
Stock repurchase program, authorized amount | | | $ 6,600,000 | | | | | | | | | | |
Share Repurchase Program | Private Placement Warrants | Landsea Holdings | Landsea Holdings | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Stock repurchase program, authorized amount | | | 6,600,000 | | | | | | | | | | |
Equity Method Investee | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Due from affiliates | | | | | | 3,400,000 | | 3,400,000 | | 2,900,000 | | | |
Landsea Capital Fund | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Related party transaction, amounts of transaction | | | | | | 6,700,000 | | 8,600,000 | | | | | |
Landsea Capital Fund | LCF JV | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Related party transaction, amounts of transaction | | | $ 55,000,000 | | | | | | | | | | |
Related Party | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Revenue from related parties | | | | $ 15,200,000 | | | | | | | | | |
Interest expense, related party | | | | | | 400,000 | 0 | 800,000 | 0 | | | | |
Related Party | California | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Interest expense, related party | | | | | | 100,000 | 200,000 | 500,000 | 800,000 | | | | |
Developed lots purchased in the period | | | | | | 3,000,000 | | 7,000,000 | | | | | |
Related Party | Landsea Holdings | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Interest expense, related party | | | | | | 300,000 | 700,000 | 1,600,000 | 3,800,000 | | | | |
Affiliated Entity | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Payments for rent | | | | | | 200,000 | 200,000 | 600,000 | 600,000 | | | | |
Right-of-use asset | | | | | | 700,000 | | 700,000 | | 1,300,000 | | | |
Lease liabilities | | | | | | 700,000 | | 700,000 | | 1,300,000 | | | |
Real estate inventories | | | | | | 900,000 | | 900,000 | | 800,000 | | | |
Affiliated Entity | California | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Developed lots purchased in the period | | | | | | | 1,700,000 | | 7,900,000 | | | | |
Affiliated Entity | California | Predetermined Land Purchase Price | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Related party transaction, amounts of transaction | | | | | $ 28,900,000 | | | | | | | | |
Affiliated Entity | Lot Sales and Other | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Cost of sales and expenses | | | | | | | | | 1,300,000 | | | | |
Affiliated Entity | Lot Sales and Other | Sale and Lease Back of Model Homes | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Revenue | | | | | | 0 | 0 | 0 | $ 1,200,000 | | | | |
Cost of sales and expenses | | | | | | 0 | $ 0 | 0 | | | | | |
Affiliated Entity | Landsea Holdings | | | | | | | | | | | | | |
Related Party Transaction [Line Items] | | | | | | | | | | | | | |
Real estate inventories | | | | | | $ 600,000 | | $ 600,000 | | $ 2,200,000 | | | |