Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets

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Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Assets    
Cash and cash equivalents $ 23,796 $ 28,026
Short-term investments, available-for-sale 52,299 47,156
Accounts receivable 11,069 10,421
Inventory 6,766 8,082
Prepaid expenses and other current assets 1,163 1,394
Total current assets 95,093 95,079
Property and equipment, net 5,052 5,494
Long-term investments, available-for-sale 7,323 10,554
Intangible assets 834 1,021
Other long-term assets 231 228
Total assets 108,533 112,376
Liabilities and stockholders' equity (deficit)    
Accounts payable 3,475 4,936
Deferred revenue and deferred profit 2,514 4,029
Accrued expenses 9,621 7,403
Accrued compensation 3,661 2,094
Current portion of capital lease obligations 9 32
Total current liabilities 19,280 18,494
Other long-term liabilities 492 855
Capital lease obligations, net of current portion 1 2
Commitments and contingencies      
Stockholders' equity:    
Preferred stock, $0.0001 par value; 25,000 shares authorized, no shares issued or outstanding      
Common stock      
Additional paid-in capital 128,973 126,695
Accumulated other comprehensive income 33 14
Accumulated deficit (40,249) (33,687)
Total stockholders' equity 88,760 93,025
Total liabilities and stockholders' equity 108,533 112,376
Class A Common Stock [Member]
    
Stockholders' equity:    
Common stock 2 2
Class B Common Stock [Member]
    
Stockholders' equity:    
Common stock $ 1 $ 1