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Inventory (Tables) | 6 Months Ended
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Jun. 30, 2018
Inventory Disclosure [Abstract] |
Components of Inventory | Major components of inventory were as follows ($000’s omitted):
| June 30, 2018 |  | December 31, 2017
Homes under construction | $ | 2,922,260 |  |  | $ | 2,421,405 |
Land under development | 4,045,615 |  |  | 4,135,814 |
Raw land | 531,790 |  |  | 589,911 |
| $ | 7,499,665 |  |  | $ | 7,147,130 |
Capitalized Interest Rollforward | Information related to interest capitalized into inventory is as follows ($000’s omitted):
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Interest in inventory, beginning of period | $ | 240,013 |  |  | $ | 203,828 |  |  | $ | 226,611 |  |  | $ | 186,097 |
Interest capitalized | 43,771 |  |  | 44,949 |  |  | 87,731 |  |  | 89,872 |
Interest expensed | (40,157 | ) |  | (35,927 | ) |  | (70,715 | ) |  | (63,119 | )
Interest in inventory, end of period | $ | 243,627 |  |  | $ | 212,850 |  |  | $ | 243,627 |  |  | $ | 212,850 |
Schedule Of Company Interests In Land Option Agreements | The following provides a summary of our interests in land option agreements as of June 30, 2018 and December 31, 2017 ($000’s omitted):
| June 30, 2018 |  | December 31, 2017
| Deposits and Pre-acquisition Costs |  | Remaining Purchase Price |  | Deposits and Pre-acquisition Costs |  | Remaining Purchase Price
Land options with VIEs | $ | 73,940 |  |  | $ | 1,145,136 |  |  | $ | 78,889 |  |  | $ | 977,480 |
Other land options | 144,497 |  |  | 1,603,950 |  |  | 129,098 |  |  | 1,485,099 |
| $ | 218,437 |  |  | $ | 2,749,086 |  |  | $ | 207,987 |  |  | $ | 2,462,579 |
Schedule Of Impairment Losses | We recorded the following significant land-related charges in the three months ended June 30, 2017 ($000's omitted):
| Statement of Operations Classification |  | June 30,
|  | 2017
Net realizable value adjustments ("NRV") - land held for sale | Land sale cost of revenues |  | $ | 81,006 |
Land inventory impairments | Home sale cost of revenues |  | 31,487 |
Impairments of unconsolidated entities | Other expense, net |  | 8,017 |
Write-offs of deposits and pre-acquisition costs | Other expense, net |  | 5,063 |
Total land-related charges |  |  | $ | 125,573 |
Schedule of Fair Value Inputs | The table below summarizes certain quantitative unobservable inputs utilized in determining the fair value of impairments recorded in the three months ended June 30, 2017:
| Range
| June 30, 2017
Average selling price ($000s) | $253 | to | $461
Sales pace per quarter (units) | 5 | to | 9
Discount rate | 18% | to | 25%

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