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Balance Sheet Details | 12 Months Ended
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Dec. 31, 2011
Balance Sheet Details [Abstract] |
Balance Sheet Details | 7. Balance Sheet Details Inventory consists of the following (in thousands):
|  | December 31, 2011 |  |  | December 31, 2010 |
Raw materials |  | $ | 3,077 |  |  | $ | 3,344 |
Finished goods |  |  | 41,527 |  |  |  | 21,213 |
Total inventory |  | $ | 44,604 |  |  | $ | 24,557 |
Accounts receivable, net consisted of the following (in thousands):
|  | December 31, 2011 |  |  | December 31, 2010 |
Accounts receivable |  | $ | 49,180 |  |  | $ | 44,545 |
Allowance for doubtful accounts |  |  | (402 | ) |  |  | (617 | )
Product return reserve |  |  | (835 | ) |  |  | (551 | )
Accounts receivable, net |  | $ | 47,943 |  |  | $ | 43,377 |
Property and equipment, net, consisted of the following (in thousands):
|  | December 31, 2011 |  |  | December 31, 2010 |
Computer equipment and purchased software |  | $ | 28,477 |  |  | $ | 24,061 |
Test equipment |  |  | 29,849 |  |  |  | 26,476 |
Furnitures and fixtures |  |  | 1,480 |  |  |  | 1,560 |
Leasehold improvements |  |  | 6,342 |  |  |  | 2,882 |
Total |  |  | 66,148 |  |  |  | 54,979 |
Accumulated depreciation |  |  | (50,018 | ) |  |  | (43,164 | )
Property and equipment, net |  | $ | 16,130 |  |  | $ | 11,815 |
Accrued liabilities consisted of the following (in thousands):
|  | December 31, 2011 |  |  | December 31, 2010 |
Accrued compensation and related benefits |  | $ | 12,406 |  |  | $ | 13,376 |
Accrued warranty |  |  | 12,104 |  |  |  | 3,789 |
Accrued professional and consulting fees |  |  | 1,741 |  |  |  | 1,613 |
Accrued excess and obsolete inventory at contract manufacturers |  |  | 3,784 |  |  |  | 1,022 |
Sales and use tax payable |  |  | 861 |  |  |  | 1,066 |
Accrued customer rebates |  |  | 1,549 |  |  |  | 1,880 |
Accrued other |  |  | 3,769 |  |  |  | 3,241 |
Total accrued liabilities |  | $ | 36,214 |  |  | $ | 25,987 |
As of December 31, 2011, accrued warranty, accrued excess and obsolete inventory and accrued other, include accruals related to the acquisition of Occam. For more information regarding the acquisition, see Note 2, "Acquisition of Occam Networks" in the Notes to Consolidated Financial Statements.

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