Inventories (Tables)

3 Months Ended

Sep. 30, 2017

Inventory, Net [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories are comprised as follows:

	September 30, 2017		June 30, 2017
Work-in progress	$	632,306	$	468,839
Component parts		7,527,693		7,271,908
Finished goods		2,570,120		2,368,855
Reserve for obsolete and excess inventories		(1,596,206)		(1,597,648)
	$	9,133,913	$	8,511,954