Property, plant and equipment (Tables)

9 Months Ended

Mar. 31, 2016

Schedule of Property, Plant and Equipment [Table Text Block]

		March 31,			June 30,
		2016			2015
Machinery and equipment	$	2,205,667		$	2,363,324
Transportation equipment		745,867			1,030,710
Leased equipment		10,691,352			11,287,442
Office equipment		1,205,561			1,305,992
Buildings and improvements		324,431			393,205
Total		15,172,878			16,380,673
Less: Accumulated depreciation		(7,256,781	)		(6,224,825	)
Plant and equipment, net	$	7,916,097		$	10,155,848