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Balance Sheet Details | 6 Months Ended
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Jun. 30, 2013
Condensed Financial Information Of Parent Company Only Disclosure [Abstract] |
Balance Sheet Details | 2. Balance Sheet Details Marketable Securities The Company’s portfolio of available-for-sale securities by contractual maturity consists of the following (in thousands):
June 30, 2013 |  | Maturity in Years |  |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government agency securities |  |  | 1 or less |  |  | $ | 1,004 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 1,004 |
Municipal bonds |  |  | 1 or less |  |  |  | 10,576 |  |  |  | 4 |  |  |  | 0 |  |  |  | 10,580 |
Certificates of deposit |  |  | 1 or less |  |  |  | 4,520 |  |  |  | 0 |  |  |  | 0 |  |  |  | 4,520 |
Corporate debentures / bonds |  |  | 1 or less |  |  |  | 6,693 |  |  |  | 0 |  |  |  | (11 | ) |  |  | 6,682 |
Total short-term marketable securities |  |  |  |  |  |  | 22,793 |  |  |  | 4 |  |  |  | (11 | ) |  |  | 22,786 |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal bonds |  |  | 1 to 2 |  |  |  | 157 |  |  |  | 0 |  |  |  | 0 |  |  |  | 157 |
Certificates of deposit |  |  | 1 to 2 |  |  |  | 3,220 |  |  |  | 0 |  |  |  | 0 |  |  |  | 3,220 |
Corporate debentures / bonds |  |  | 1 to 2 |  |  |  | 8,238 |  |  |  | 0 |  |  |  | (29 | ) |  |  | 8,209 |
Total long-term marketable securities |  |  |  |  |  |  | 11,615 |  |  |  | 0 |  |  |  | (29 | ) |  |  | 11,586 |
|  |  |  |  |  | $ | 34,408 |  |  | $ | 4 |  |  | $ | (40 | ) |  | $ | 34,372 |
December 31, 2012 |  | Maturity in Years |  |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government agency securities |  |  | 1 or less |  |  | $ | 3,265 |  |  | $ | 1 |  |  | $ | 0 |  |  | $ | 3,266 |
Municipal bonds |  |  | 1 or less |  |  |  | 11,246 |  |  |  | 14 |  |  |  | 0 |  |  |  | 11,260 |
Certificates of deposit |  |  | 1 or less |  |  |  | 6,200 |  |  |  | 5 |  |  |  | 0 |  |  |  | 6,205 |
Corporate debentures / bonds |  |  | 1 or less |  |  |  | 17,330 |  |  |  | 3 |  |  |  | 0 |  |  |  | 17,333 |
Total short-term marketable securities |  |  |  |  |  |  | 38,041 |  |  |  | 23 |  |  |  | 0 |  |  |  | 38,064 |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  |  | 1 to 2 |  |  |  | 1,200 |  |  |  | 1 |  |  |  | 0 |  |  |  | 1,201 |
Total long-term marketable securities |  |  |  |  |  |  | 1,200 |  |  |  | 1 |  |  |  | 0 |  |  |  | 1,201 |
|  |  |  |  |  | $ | 39,241 |  |  | $ | 24 |  |  | $ | 0 |  |  | $ | 39,265 |
The Company’s available-for-sale securities are carried on the condensed consolidated balance sheet at fair market value with the related unrealized gains and losses included in accumulated other comprehensive income (loss) on the condensed consolidated balance sheet, which is a separate component of stockholders’ equity. Realized gains and losses on the sale of available-for-sale marketable securities are determined using the specific-identification method. The Company has a credit facility with a bank to allow margin borrowings based on the Company’s investments in cash equivalents and marketable securities held with the bank. This facility is collateralized by the Company’s cash equivalents and marketable securities held with the bank. At June 30, 2013, the Company had approximately $11.7 million in marketable securities held at this bank. Any monies borrowed and interest incurred are payable on demand, and there is no express expiration date to the credit facility. During the three and six months ended June 30, 2013, the Company borrowed approximately $3.0 million and $10.0 million, respectively, and had outstanding borrowings of $1.6 million under this facility at June 30, 2013. Under the terms of the credit facility, the bank may liquidate any of the Company’s cash equivalents or marketable securities held at any time in order to recoup the outstanding balance of the facility. Accordingly, a like amount of marketable equity securities have been classified by the Company as restricted marketable securities on the balance sheet at June 30, 2013. At June 30, 2013 the Company had no cash equivalents held at this bank. The restricted marketable securities of $1.6 million are included in the June 30, 2013 marketable securities presented in the table above. As of June 30, 2013, the Company recorded a net unrealized loss of $36,000, or $24,000 net of tax. The Company’s net unrealized loss is the result of market conditions affecting its fixed-income, debt and equity securities, which are included in accumulated other comprehensive income (loss) in the condensed consolidated balance sheet for the period then ended. As of June 30, 2013 and December 31, 2012, we did not have any investments in marketable securities with a material unrealized loss position for twelve months or greater. Inventories Inventories consist of the following (in thousands):
|  | June 30, 2013 |  |  | December 31, 2012 |
Finished goods |  | $ | 19,810 |  |  | $ | 26,776 |
Raw materials and components |  |  | 9,087 |  |  |  | 12,240 |
|  | $ | 28,897 |  |  | $ | 39,016 |
Accrued Expenses Accrued expenses consist of the following (in thousands):
|  | June 30, 2013 |  |  | December 31, 2012 |
Royalties |  | $ | 5,574 |  |  | $ | 4,349 |
Payroll and related expenses |  |  | 6,112 |  |  |  | 7,788 |
Product warranty |  |  | 2,451 |  |  |  | 2,329 |
Market development funds and price protection |  |  | 2,075 |  |  |  | 2,147 |
Deferred rent |  |  | 694 |  |  |  | 573 |
Professional fees |  |  | 2,715 |  |  |  | 1,549 |
Deferred revenue |  |  | 3,932 |  |  |  | 4,630 |
Other |  |  | 4,040 |  |  |  | 4,435 |
|  | $ | 27,593 |  |  | $ | 27,800 |
Accrued Warranty Obligations Accrued warranty obligations consist of the following (in thousands):
|  | Three Months Ended June 30, 2013 |  |  | Three Months Ended June 30, 2012 |  |  | Six Months Ended June 30, 2013 |  |  | Six Months Ended June 30, 2012 |
Warranty liability at beginning of period |  | $ | 2,664 |  |  | $ | 1,738 |  |  | $ | 2,329 |  |  | $ | 1,525 |
Additions charged to operations |  |  | 1,708 |  |  |  | 1,845 |  |  |  | 3,363 |  |  |  | 2,730 |
Deductions from liability |  |  | (1,921 | ) |  |  | (909 | ) |  |  | (3,241 | ) |  |  | (1,581 | )
Warranty liability at end of period |  | $ | 2,451 |  |  | $ | 2,674 |  |  | $ | 2,451 |  |  | $ | 2,674 |
The Company accrues warranty costs based on estimates of future warranty-related replacement, repairs or rework of products. The Company generally provides one to three years of coverage for products following the date of purchase and the Company accrues the estimated cost of warranty coverage as a component of cost of net revenues in the condensed consolidated statements of operations at the time revenue is recognized. In estimating our future warranty obligations, we consider 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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- Definition The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 06 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7656940&loc=d3e5283-111683 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 12 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 05 -Paragraph c -Article 7 + Details
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