Supplemental Balance Sheet Information

12 Months Ended

Jun. 30, 2016

Supplemental Balance Sheet Information [Abstract]

Supplemental Balance Sheet Disclosures [Text Block]

8. Supplemental Balance Sheet Information

	June 30,
	2016		2015
Inventories
Work in progress	$	431,802	$	545,410
Component parts		7,374,776		7,721,413
Finished goods		2,567,607		2,397,044
Reserve for obsolete and excess inventory		(1,498,915)		(1,472,956)
	$	8,875,270	$	9,190,911

	Estimated
	Useful Life
	(years)
Property, plant and equipment
Machinery and equipment	3-10	$	14,399,008	$	14,693,789
Buildings	28-35		13,055,628		13,052,328
Land and land improvements	5-7		662,402		934,216
Total property, plant and equipment at cost			28,117,038		28,680,333
Less accumulated depreciation and amortization			(21,369,468)		(20,859,127)
		$	6,747,570	$	7,821,206

Depreciation expense was approximately $1.2 million, $1.3 million, and $1.2 million for the fiscal years ended June 30, 2016, 2015 and 2014, respectively.

Other accrued liabilities
Accrued compensation expense	$	1,099,935	$	1,201,099
Customer deposits		859,307		589,276
Other		381,961		369,191
	$	2,341,203	$	2,159,566