Supplemental Balance Sheet Information

12 Months Ended

Jun. 30, 2015

Supplemental Balance Sheet Information [Abstract]

Supplemental Balance Sheet Disclosures [Text Block]

8. Supplemental Balance Sheet Information

	June 30,
	2015		2014
Inventories
Work in progress	$	545,410	$	616,474
Component parts		7,721,413		7,605,543
Finished goods		2,397,044		2,617,799
Reserve for obsolete and excess inventory		(1,472,956)		(1,433,718)
	$	9,190,911	$	9,406,098

	Estimated
	Useful Life
	(years)
Property, plant and equipment
Machinery and equipment	3-10	$	14,693,789	$	14,609,438
Buildings	28-35		13,052,328		13,048,090
Land and land improvements	5-7		934,216		934,216
Total property, plant and equipment at cost			28,680,333		28,591,744
Less accumulated depreciation and amortization			(20,859,127)		(19,656,143)
		$	7,821,206	$	8,935,601

Depreciation expense was approximatley $1.3 million, $1.2 million, and $1.2 million for the fiscal years ended June 30, 2015, 2014 and 2013, respectively.

Other accrued liabilities
Accrued compensation expense	$	1,201,099	$	1,064,354
Customer deposits		589,276		252,496
Other		369,191		307,336
	$	2,159,566	$	1,624,186