Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Deferred Revenue Arrangement [Line Items]
Inventory reserve	90,000	$ 90,000
Buildings | Minimum
Deferred Revenue Arrangement [Line Items]
Useful life	10 years
Buildings | Maximum
Deferred Revenue Arrangement [Line Items]
Useful life	33 years
Trucks and automotive equipment | Minimum
Deferred Revenue Arrangement [Line Items]
Useful life	3 years
Trucks and automotive equipment | Maximum
Deferred Revenue Arrangement [Line Items]
Useful life	10 years
Shop machinery and equipment | Minimum
Deferred Revenue Arrangement [Line Items]
Useful life	3 years
Shop machinery and equipment | Maximum
Deferred Revenue Arrangement [Line Items]
Useful life	10 years
Land improvements | Minimum
Deferred Revenue Arrangement [Line Items]
Useful life	10 years
Land improvements | Maximum
Deferred Revenue Arrangement [Line Items]
Useful life	15 years
Office equipment | Minimum
Deferred Revenue Arrangement [Line Items]
Useful life	3 years
Office equipment | Maximum
Deferred Revenue Arrangement [Line Items]
Useful life	10 years