Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2012	Sep. 30, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 6,234,268	$ 5,628,156
Marketable securities	405,169	2,035,593
Accounts receivable, net	9,553,385	7,771,356
Inventories:
Parts, components, and materials	3,773,356	3,969,656
Work-in-process	1,396,268	2,032,176
Finished products	4,133,649	5,392,699
Inventory net	9,303,273	11,394,531
Recoverable income taxes	92,811	92,811
Prepaid expenses and other current assets	529,070	624,939
TOTAL CURRENT ASSETS	26,117,976	27,547,386
Property, plant and equipment:
Land	1,188,960	1,179,155
Buildings and improvements	5,730,114	5,690,029
Machinery, equipment and vehicles	6,262,723	6,003,943
Property, plant and equipment	13,181,797	12,873,127
Less accumulated depreciation and amortization	9,139,622	8,532,990
Property, Plant and Equipment Net	4,042,175	4,340,137
Other assets	1,174,598	1,303,753
TOTAL ASSETS	31,334,749	33,191,276
CURRENT LIABILITIES
Accounts payable	3,403,378	4,240,096
Accrued compensation and employee benefits	2,505,744	2,297,575
Accrued expenses	1,168,750	1,022,034
Unearned revenue	443,708	495,612
Income taxes payable	32,589	32,589
TOTAL CURRENT LIABILITIES	7,554,169	8,087,906
Unearned revenue	161,028	234,927
Other long-term liabilities	2,431,742	2,424,516
TOTAL LIABILITIES	10,146,939	10,747,349
SHAREHOLDERS’ EQUITY
Common stock, par value $.01	53,509	53,450
Capital in excess of par value	25,343,712	25,041,273
Retained earnings	261,375	1,641,720
Less treasury stock, at cost	(4,300,952)	(4,219,502)
Accumulated other comprehensive loss	(169,834)	(73,014)
TOTAL SHAREHOLDERS’ EQUITY	21,187,810	22,443,927
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 31,334,749	$ 33,191,276