Consolidated Balance Sheets (USD $)	Apr. 30, 2013	Apr. 30, 2012
Current assets:
Cash and cash equivalents	$ 324,000	$ 3,275,000
Accounts receivable, less allowance for doubtful accounts and sales returns of $200 in 2013 and 2012	2,885,000	2,605,000
Inventories:
Raw materials	1,425,000	1,921,000
Work in process	89,000	30,000
Finished goods	1,389,000	981,000
Inventory, net	2,903,000	2,932,000
Note receivable	275,000
Other current assets	81,000	115,000
Total current assets	6,468,000	8,927,000
Property and equipment, at cost:
Machinery and equipment	11,733,000	11,976,000
Leasehold improvements	608,000	608,000
Property and equipment, gross	12,341,000	12,584,000
Less: accumulated depreciation and amortization	11,916,000	11,886,000
Net property and equipment	425,000	698,000
Other assets	56,000	55,000
Intangible assets, net of accumulated amortization	133,000	297,000
Goodwill	1,083,000	1,453,000
Total assets	8,165,000	11,430,000
Current liabilities:
Note payable-revolving credit line	1,876,000	121,000
Accounts payable	948,000	1,017,000
Accrued liabilities	684,000	766,000
Due to related party - current portion	400,000	333,000
Total current liabilities	3,908,000	2,237,000
Due to related party - long term	1,267,000	1,667,000
Total liabilities	5,175,000	3,904,000
Stockholders' equity:
Common stock, par value $1.00 per share. Authorized 9,000,000 shares; 1,754,662 issued and outstanding at April 30, 2013 and 1,783,885 issued and 1,776,568 outstanding at April 30, 2012	1,755,000	1,784,000
Treasury stock 7,317 shares as of April 30, 2012 at cost		45,000
Additional paid-in capital	19,288,000	19,215,000
Accumulated deficit	(18,053,000)	(13,428,000)
Total stockholders' equity	2,990,000	7,526,000
Total liabilities and stockholders' equity	$ 8,165,000	$ 11,430,000