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Balance Sheet Details - Summary of Marketable Securities Available-for-Sale (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 13,497 | $ 22,616
Gross Unrealized Gains | 6 | 5
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 13,503 | 22,621
Short-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 13,497 | 19,173
Gross Unrealized Gains | 6 | 5
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 13,503 | 19,178
Long-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost |  | 3,443
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | 0
Estimated Fair Value |  | 3,443
Government agency securities [Member] | Short-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Maturity in Years | 1 or less | 1 or less
Amortized Cost | 1,150 | 2,350
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 1,150 | 2,351
Municipal bonds [Member] | Short-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Maturity in Years | 1 or less | 1 or less
Amortized Cost | 975 | 2,828
Gross Unrealized Gains | 1 | 1
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 976 | 2,829
Certificates of deposit [Member] | Short-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Maturity in Years | 1 or less | 1 or less
Amortized Cost | 3,220 | 3,360
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 3,220 | 3,360
Certificates of deposit [Member] | Long-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Maturity in Years |  | 1 to 2
Amortized Cost |  | 1,300
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | 0
Estimated Fair Value |  | 1,300
Corporate debentures / bonds [Member] | Short-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Maturity in Years | 1 or less | 1 or less
Amortized Cost | 8,152 | 10,635
Gross Unrealized Gains | 5 | 3
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 8,157 | 10,638
Corporate debentures / bonds [Member] | Long-term marketable securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Maturity in Years |  | 1 to 2
Amortized Cost |  | 2,143
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | 0
Estimated Fair Value |  | $ 2,143

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- Definition Marketable securities maturity in years. + References No definition available. + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: 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 + Details
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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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