Consolidated Balance Sheets (USD $)	Jun. 30, 2012	Jun. 30, 2011
Cash and cash equivalents	$ 278,263	$ 384,904
Trade accounts receivable, less allowance for doubtful accounts of $201,349 as of June 30, 2012 and $293,436 as of June 30, 2011	3,667,086	3,672,128
Other receivables	11,718	14,164
Inventories, net	6,098,597	5,647,815
Prepaid expenses and other	226,596	266,439
Prepaid income taxes	3,550	28,754
Current portion of deferred income tax assets	368,348	418,607
Total current assets	10,654,158	10,432,811
Property and equipment, net	3,677,898	3,722,749
Intangible assets, net	324,715	369,352
Other assets	482,719	294,269
Deferred income tax assets, net of current portion	131,440
Total assets	15,270,930	14,819,181
Current portion of long-term debt	395,055	368,135
Line of credit	3,497,597	2,583,937
Warranty reserve	181,000	185,245
Accounts payable	2,413,201	2,127,163
Accrued expenses	386,229	379,336
Accrued payroll and benefits expense	215,218	236,264
Total current liabilities	7,088,300	5,880,080
Long-term debt, net of current portion	1,916,315	2,238,417
Deferred income tax liabilities, net of current portion		85,525
Total liabilities	9,004,615	8,204,022
Commitments and contingencies
Common stock, no par value: Authorized 50,000,000 shares; issued 12,688,650 shares as of June 30, 2012 and 13,060,392 shares as of June 30, 2011	7,091,935	7,417,244
Accumulated deficit	(825,620)	(802,085)
Total stockholders' equity	6,266,315	6,615,159
Total liabilities and stockholders' equity	$ 15,270,930	$ 14,819,181