CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 29, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 1,613,000	$ 3,634,000
Accounts receivable, net	232,000	122,000
Inventory, net	107,000	51,000
Prepaid expenses and other current assets	334,000	315,000
Total Current Assets	2,286,000	4,122,000
Property and equipment, net of accumulated depreciation of $19,994,000 and $19,445,000, respectively	5,868,000	6,242,000
Patents, licenses and purchased technology, net of accumulated amortization of $2,400,000 and $2,367,000, respectively	806,000	889,000
Other assets	504,000	776,000
Total Assets	9,464,000	12,029,000
Current Liabilities:
Accounts payable	541,000	603,000
Accrued expenses	687,000	460,000
Total Current Liabilities	1,228,000	1,063,000
Other long term liabilities	547,000	674,000
Total Liabilities	1,775,000	1,737,000
Commitments and contingencies-Notes 5 and 6
Stockholders' Equity:
Preferred stock, $.001 par value, 2,000,000 shares authorized, 536,520 and 564,642 shares issued and outstanding, respectively	1,000	1,000
Common stock, $.001 par value, 250,000,000 shares authorized, 4,751,284 and 4,193,690 shares issued and outstanding, respectively	5,000	4,000
Capital in excess of par value	274,471,000	272,231,000
Accumulated deficit	(266,788,000)	(261,944,000)
Total Stockholders' Equity	7,689,000	10,292,000
Total Liabilities and Stockholders' Equity	$ 9,464,000	$ 12,029,000