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Summary of Significant Accounting Policies (Details)	12 Months Ended
Summary of Significant Accounting Policies (Details)	Dec. 31, 2019
Buildings \| Minimum
Useful life	10 years
Buildings \| Maximum
Useful life	40 years
Trucks and Automotive Equipment \| Minimum
Useful life	3 years
Trucks and Automotive Equipment \| Maximum
Useful life	10 years
Shop Machinery and Equipment \| Minimum
Useful life	3 years
Shop Machinery and Equipment \| Maximum
Useful life	10 years
Land Improvements \| Minimum
Useful life	10 years
Land Improvements \| Maximum
Useful life	15 years
Rental Equipment \| Minimum
Useful life	5 years
Rental Equipment \| Maximum
Useful life	10 years
Office Equipment \| Minimum
Useful life	3 years
Office Equipment \| Maximum
Useful life	10 years