Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 29, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 2,727 $ 6,211
Short-term investments 2,873 2,957
Accounts receivable, net of allowance for doubtful accounts of $0 and $14 as of September 29, 2012 and December 31, 2011, respectively 54 40
Inventories 950 892
Prepaid expenses and other current assets 356 100
Total current assets 6,960 10,200
Property and equipment, net 450 467
Total assets 7,410 10,667
Current liabilities:    
Accounts payable 178 85
Accrued liabilities 245 171
Accrued milestone and royalties 4 4
Total current liabilities 427 260
Commitments and contingencies (Note 9)      
Stockholders' equity:    
Undesignated stock, $0.01 par value, 10,000,000 shares authorized, no shares issued and outstanding as of September 29, 2012 and December 31, 2011, respectively      
Common stock, $0.01 par value, 40,000,000 shares authorized, 16,345,579 and 16,245,579 issued and outstanding as of September 29, 2012 and December 31, 2011, respectively 163 162
Additional paid-in capital 35,182 34,591
Accumulated other comprehensive loss   (3)
Accumulated deficit (28,362) (24,343)
Total stockholders' equity 6,983 10,407
Total liabilities and stockholders' equity $ 7,410 $ 10,667