Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (UNAUDITED)

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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Current assets:    
Cash and cash equivalents $ 26,634 $ 28,026
Short-term investments, available-for-sale 50,792 47,156
Accounts receivable, net 16,279 10,421
Inventory 8,946 8,082
Prepaid expenses and other current assets 1,394 1,394
Total current assets 104,045 95,079
Property and equipment, net 6,274 5,494
Long-term investments, available-for-sale 2,619 10,554
Intangible assets 461 1,021
Other long-term assets 258 228
Total assets 113,657 112,376
Current liabilities:    
Accounts payable 7,931 4,936
Deferred revenue and deferred profit 2,341 4,029
Accrued expenses 12,831 7,403
Accrued compensation 5,986 2,094
Current portion of capital lease obligations 4 32
Total current liabilities 29,093 18,494
Other long-term liabilities 683 855
Capital lease obligations, net of current portion   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 135,430 126,695
Accumulated other comprehensive income 42 14
Accumulated deficit (51,594) (33,687)
Total stockholders' equity 83,881 93,025
Total liabilities and stockholders' equity 113,657 112,376
Class A Common Stock [Member]
    
Stockholders' equity:    
Common stock 2 2
Class B Common Stock [Member]
    
Stockholders' equity:    
Common stock $ 1 $ 1