Significant Accounting Policies Self Insurance (Policies)

12 Months Ended

Dec. 31, 2017

Inventories [Abstract]

Self Insurance Reserve [Policy Text Block]

Self-insurance

We have a wholly owned insurance subsidiary that provides employer's liability, general and automotive liability and workers' compensation insurance and, from time to time, builder's risk insurance (within certain limits) to our companies. We may also, in the future, have this insurance subsidiary accept other risks that we cannot or do not wish to transfer to outside insurance companies. Included in other liabilities on our consolidated balance sheets are reserves for self-insurance totaling $23.1 million and $24.1 million at the years ended December 31, 2017 and 2016, respectively.