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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] | The summary of capitalized interest for the years ended December 31, 2017, 2016 and 2015 is as follows:
| Year Ended December 31,
(In thousands) | 2017 |  | 2016 |  | 2015
Capitalized interest, beginning of period | $ | 16,012 |  |  | $ | 16,740 |  |  | $ | 15,296 |
Interest capitalized to inventory | 21,484 |  |  | 17,685 |  |  | 18,410 |
Capitalized interest charged to cost of sales | (20,327 | ) |  | (18,413 | ) |  | (16,966 | )
Capitalized interest, end of year | $ | 17,169 |  |  | $ | 16,012 |  |  | $ | 16,740 |
Interest incurred | $ | 40,358 |  |  | $ | 35,283 |  |  | $ | 35,931 |
Property, Plant and Equipment [Table Text Block] | Following are the major classes of depreciable assets and their estimated useful lives:
| Year Ended December 31,
(In thousands) | 2017 |  | 2016
Land, building and improvements | $ | 11,823 |  |  | $ | 11,823 |
Office furnishings, leasehold improvements, computer equipment and computer software | 30,409 |  |  | 25,895 |
Transportation and construction equipment | 10,067 |  |  | 10,075 |
Property and equipment | 52,299 |  |  | 47,793 |
Accumulated depreciation | (25,483 | ) |  | (25,494 | )
Property and equipment, net | $ | 26,816 |  |  | $ | 22,299 |
| Estimated Useful Lives
Building and improvements | 35 years
Office furnishings, leasehold improvements, computer equipment and computer software | 3-7 years
Transportation and construction equipment | 5-25 years
Schedule of Other Assets [Table Text Block] | Other assets at December 31, 2017 and 2016 consisted of the following:.
| Year Ended December 31,
(In thousands) | 2017 |  | 2016
Development reimbursement receivable from local municipalities | $ | 14,981 |  |  | $ | 15,698 |
Mortgage servicing rights | 7,821 |  |  | 11,443 |
Prepaid expenses | 9,022 |  |  | 11,227 |
Prepaid acquisition costs | 5,634 |  |  | 4,740 |
Other | 23,677 |  |  | 19,818 |
Total other assets | $ | 61,135 |  |  | $ | 62,926 |
Other Liabilities [Table Text Block] | Other liabilities at December 31, 2017 and 2016 consisted of the following:
| Year Ended December 31,
(In thousands) | 2017 |  | 2016
Accruals related to land development | $ | 37,180 |  |  | $ | 35,417 |
Warranty | 26,133 |  |  | 27,732 |
Payroll and other benefits | 28,128 |  |  | 26,140 |
Other | 40,093 |  |  | 33,873 |
Total other liabilities | $ | 131,534 |  |  | $ | 123,162 |

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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