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Balance Sheet Details | 6 Months Ended
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Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Balance Sheet Details | Balance Sheet Details Inventories Inventories consist of the following (in thousands):
| June 30, 2015 |  | December 31, 2014
Finished goods | $ | 35,606 |  |  | $ | 33,045 |
Raw materials and components | 4,002 |  |  | 4,758 |
| $ | 39,608 |  |  | $ | 37,803 |
Accrued Expenses Accrued expenses consist of the following (in thousands):
| June 30, 2015 |  | December 31, 2014
Royalties | $ | 5,709 |  |  | $ | 4,035 |
Payroll and related expenses | 14,760 |  |  | 8,038 |
Product warranty | 852 |  |  | 1,196 |
Market development funds and price protection | 2,924 |  |  | 2,502 |
Professional fees | 1,043 |  |  | 780 |
Deferred revenue | 592 |  |  | 962 |
Restructuring | 70 |  |  | 1,886 |
Acquisition-related earn out | 1,446 |  |  | — |
Other | 3,023 |  |  | 4,445 |
| $ | 30,419 |  |  | $ | 23,844 |
Accrued Warranty Obligations Accrued warranty obligations consist of the following (in thousands):
| Six Months Ended June 30,
| 2015 |  | 2014
Warranty liability at beginning of period | $ | 1,196 |  |  | $ | 2,244 |
Additions charged to operations | 343 |  |  | 1,199 |
Deductions from liability | (687 | ) |  | (1,863 | )
Warranty liability at end of period | $ | 852 |  |  | $ | 1,580 |
The Company generally provides one to three years of warranty coverage for products following the date of purchase. The estimated cost of warranty coverage is accrued as a component of cost of net revenues in the condensed consolidated statements of operations at the time revenue is recognized. Warranty costs are accrued based on estimates of future warranty-related replacement, repairs or rework of products. In estimating its future warranty obligations, the Company considers various relevant factors, including the historical frequency and volume of claims, and the cost to replace or repair products under warranty.

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