Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2011	Jun. 30, 2011
Cash and cash equivalents	$ 254,460	$ 384,904
Trade accounts receivable, less allowance for doubtful accounts of $350,741 as of December 31, 2011 and $293,436 as of June 30, 2011	3,687,238	3,672,128
Other receivables	27,482	14,164
Inventories, net	5,833,425	5,647,815
Prepaid expenses and other	351,798	266,439
Prepaid income taxes	12,545	28,754
Current portion of deferred income tax assets	440,868	418,607
Total current assets	10,607,816	10,432,811
Property and equipment, net	3,769,532	3,722,749
Intangible assets, net	347,033	369,352
Other assets	289,637	294,269
Total assets	15,014,018	14,819,181
Current portion of long-term debt	381,128	368,135
Line of credit	2,943,242	2,583,937
Warranty reserve	185,245	185,245
Accounts payable	2,245,149	2,127,163
Accrued expenses	447,768	379,336
Accrued payroll and benefits expense	292,937	236,264
Total current liabilities	6,495,469	5,880,080
Long-term debt, net of current portion	2,098,433	2,238,417
Deferred income tax liabilities, net of current portion	95,962	85,525
Total liabilities	8,689,864	8,204,022
Commitments and contingencies
Common stock, no par value: Authorized 50,000,000 shares; issued 12,792,666 shares as of December 31, 2011 and 13,060,392 shares as of June 30, 2011	7,148,165	7,417,244
Accumulated deficit	(824,011)	(802,085)
Total stockholders' equity	6,324,154	6,615,159
Total liabilities and stockholders' equity	$ 15,014,018	$ 14,819,181