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Balance Sheet Details - Additional Information (Detail) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2013 | Dec. 31, 2012
Balance Sheet Details [Line Items] |  |  |
Marketable securities held at bank | $ 11,700,000 | $ 11,700,000 |
Amount borrowed against the facility | 3,000,000 | 10,000,000 |
Outstanding borrowings under the credit facility | 1,600,000 | 1,600,000 |
Restricted marketable securities | 1,583,000 | 1,583,000 | 0
Investments in marketable securities with unrealized loss position | 0 | 0 | 0
Product warranty description |  | One to three years of coverage for products following the date of purchase |
Minimum [Member] |  |  |
Balance Sheet Details [Line Items] |  |  |
Net unrealized loss | 24,000 | 24,000 |
Product warranty period |  | 1 year |
Maximum [Member] |  |  |
Balance Sheet Details [Line Items] |  |  |
Net unrealized loss | $ 36,000 | $ 36,000 |
Product warranty period |  | 3 years |

X
- Definition Net amount of accumulated unrealized gains (losses) on Investment in available-for-sale that are recognized in AOCI. + References No definition available. + Details
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- Details
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- Definition Investments Securities In Unrealized Loss Position For Continuous Twelve Month Period Or Longer Book Value + References No definition available. + Details
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- Definition Marketable Securities Held At Bank + References No definition available. + Details
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- Definition Product warranty coverage period. + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum amount borrowed under the credit facility at any time during the period. + References No definition available. + Details
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- Definition Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale which are intended to be held for less than one year or the normal operating cycle, whichever is longer and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 6 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph b -Article 4 + Details
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- Definition Describes the nature of the product warranty, including the approximate term of the product warranty, how the product warranty arose, and the events or circumstances that would require the warrantor to perform under the product warranty. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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