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Inventory (Tables) | 9 Months Ended
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Sep. 30, 2015
Inventory Disclosure [Abstract] |
Schedule of Real Estate Inventory | A summary of inventory is as follows (in thousands):
| September 30, 2015 |  | December 31, 2014
Completed home inventory and residential lots held for sale | $ | 80,181 |  |  | $ | 47,048 |
Work in process | 213,849 |  |  | 203,756 |
Undeveloped land | 6,193 |  |  | 16,220 |
Land not owned under option agreements | 17,804 |  |  | 7,279 |
Total Inventory | $ | 318,027 |  |  | $ | 274,303 |
Summary of Real Estate Inventory Capitalized Interest Costs | Interest costs incurred, capitalized and expensed were as follows (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Interest capitalized at beginning of period | $ | 9,854 |  |  | $ | 1,082 |  |  | $ | 3,713 |  |  | $ | 1,065 |
Interest incurred | 1,890 |  |  | 308 |  |  | 9,238 |  |  | 1,138 |
Interest charged to cost of sales | (1,389 | ) |  | — |  |  | (2,315 | ) |  | (105 | )
Interest charged to interest expense | — |  |  | (308 | ) |  | (281 | ) |  | (1,016 | )
Interest capitalized at end of period | $ | 10,355 |  |  | $ | 1,082 |  |  | $ | 10,355 |  |  | $ | 1,082 |

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