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Investment in Joint Venture Arrangements Investment in Joint Venture Arrangements (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Summarized Financial Information, Equity Excluding Noncontrolling Interests | $ 2,400 | $ 2,600
Minimum [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Discount Rate Used in Determining Fair Value of land and lots | 13.00% | 13.00%
Equity Method Investment, Ownership Percentage | 25.00% | 25.00%
Maximum [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Discount Rate Used in Determining Fair Value of land and lots | 16.00% | 16.00%
Equity Method Investment, Ownership Percentage | 74.00% | 97.00%

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