Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of Property and Equipment

Depreciation is computed using the straight-line method over the following estimated useful lives:

	Years
Buildings		10-33
Trucks and automotive equipment		3-10
Shop machinery and equipment		3-10
Land improvements		10-15
Office equipment		3-10

Property and equipment consists of the following:
	December 31,
	2016			2015
Land and land improvements	$	1,335,341		$	677,113
Buildings	5,265,134			4,178,158
Machinery and equipment	9,362,431			7,946,039
Rental equipment	1,972,278			1,505,590
	17,935,184			14,306,900
Less: accumulated depreciation and amortization	(9,927,666		)	(9,233,033		)
	$	8,007,518		$	5,073,867