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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Jan. 01, 2011
ASSETS    
Cash and cash equivalents $ 10,535 $ 14,210
Investments in marketable securities   824
Accounts receivable, net of allowance for doubtful accounts of $47 (2011) and $67 (2010) 11,399 6,451
Inventories 6,057 4,509
Prepaid expenses and other current assets 806 1,396
Total current assets 28,797 27,390
Property and equipment, net 2,771 4,077
Long-term investments in marketable securities 444 890
Other assets 161 337
Total assets 32,173 32,694
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 6,155 6,256
Accrued payroll and related liabilities 1,813 1,762
Accrued expenses and other current liabilities 460 369
Accrued engineering charges 450 638
Current portion of long-term debt 2,144 674
Total current liabilities 11,022 9,699
Long-term debt, net of current portion 1,118 1,063
Other liabilities 94 85
Total liabilities 12,234 10,847
Commitments and contingencies      
Stockholders' equity:    
Preferred stock, $0.001 par value-10,000 shares authorized; no shares issued and outstanding      
Common stock, $0.001 par value-90,000 shares authorized; 26,390 (2011) and 25,284 (2010) shares issued and outstanding 26 25
Additional paid-in capital 92,709 89,074
Accumulated deficit (72,740) (67,141)
Accumulated other comprehensive loss (56) (111)
Total stockholders' equity 19,939 21,847
Total liabilities and stockholders' equity $ 32,173 $ 32,694