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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Assets    
Cash and cash equivalents $ 38,938 $ 66,304
Marketable securities   32,020
Restricted cash 754  
Accounts receivable, net 47,943 43,377
Inventory 44,604 24,557
Deferred cost of revenue 8,324 7,771
Prepaids and other current assets 4,429 3,245
Total current assets 144,992 177,274
Property and equipment, net 16,130 11,815
Goodwill 116,175 65,576
Intangible assets, net 80,048 515
Other assets 2,194 2,376
Total assets 359,539 257,556
Liabilities and stockholders' equity    
Accounts payable 14,250 10,268
Accrued liabilities 36,214 25,987
Deferred revenue 16,783 14,062
Total current liabilities 67,247 50,317
Long-term portion of deferred revenue 13,347 10,985
Other long-term liabilities 1,528 951
Total liabilities 82,122 62,253
Commitments and contingencies (See Note 8)      
Stockholders' equity:    
Preferred stock, $0.025 par value; 5,000,000 shares authorized; no shares issued and outstanding as of December 31, 2011 and December 31, 2010      
Common stock, $0.025 par value; 100,000,000 shares authorized; 47,825,200 shares and 38,711,586 shares issued and outstanding as of December 31, 2011 and December 31, 2010, respectively 1,195 968
Additional paid-in capital 740,309 605,939
Other comprehensive income 98 31
Accumulated deficit (464,185) (411,635)
Total stockholders' equity 277,417 195,303
Total liabilities and stockholders' equity $ 359,539 $ 257,556