Basis of Presentation Subsequent Event (Policies)	3 Months Ended
Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events, Policy [Policy Text Block]	Subsequent Events Beginning in the latter portion of the first quarter of 2020, the United States was severely impacted by the novel coronavirus (COVID-19) pandemic. While the response to the COVID-19 outbreak continues to rapidly evolve, it has led to quarantines, “stay-at-home” orders, social distancing guidelines and similar mandates across the country that have significantly disrupted activities in large segments of the economy. Because all of the states in which we operate (other than Michigan) recognize housing constructions and mortgage services as essential businesses, most of our communities remain open for continued construction of homes and sales by appointment. Although we continue to build and sell homes in these markets, traffic and sales have slowed significantly, home cancellations have increased significantly and our construction and home delivery cycles have been negatively impacted as well. We expect that the COVID-19 pandemic will negatively impact our business, results of operations, financial condition and/or cash flows in the second quarter of 2020 and subsequent reporting periods. However, the future impacts of COVID-19 on our results of operations, financial condition, and cash flows are contingent upon the duration and severity of the outbreak, as well as the extent of the associated decline in economic activity and timing of the subsequent recovery. Further discussion of the potential impacts on our business, results of operations, financial condition and cash flows from the COVID-19 pandemic is provided below under Part II, Item 1A “Risk Factors.”

Beginning in the latter portion of the first quarter of 2020, the United States was severely impacted by the novel coronavirus (COVID-19) pandemic. While the response to the COVID-19 outbreak continues to rapidly evolve, it has led to quarantines, “stay-at-home” orders, social distancing guidelines and similar mandates across the country that have significantly disrupted activities in large segments of the economy. Because all of the states in which we operate (other than Michigan) recognize housing constructions and mortgage services as essential businesses, most of our communities remain open for continued construction of homes and sales by appointment. Although we continue to build and sell homes in these markets, traffic and sales have slowed significantly, home cancellations have increased significantly and our construction and home delivery cycles have been negatively impacted as well. We expect that the COVID-19 pandemic will negatively impact our business, results of operations, financial condition and/or cash flows in the second quarter of 2020 and subsequent reporting periods. However, the future impacts of COVID-19 on our results of operations, financial condition, and cash flows are contingent upon the duration and severity of the outbreak, as well as the extent of the associated decline in economic activity and timing of the subsequent recovery. Further discussion of the potential impacts on our business, results of operations, financial condition and cash flows from the COVID-19 pandemic is provided below under Part II, Item 1A “Risk Factors.”