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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

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