Fair Value Measurements and Marketable Securities - Additional Information (Detail) - USD ($) shares in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Schedule Of Available For Sale Securities [Line Items] | |||
| Recognized realized gains | $ 3,000 | $ 5,000 | |
| Recognized realized losses | 0 | 0 | |
| Realized gain or losses | $ 0 | ||
| Realized gains and losses related to unrealized gains and losses in accumulated comprehensive income | $ 0 | $ 0 | |
| Weighted average maturity for available for sale securities | 2 months 24 days | ||
| Shares of common stock to be purchased with warrants | 12.1 | ||
| Maximum | |||
| Schedule Of Available For Sale Securities [Line Items] | |||
| Available for sale securities, longest maturity date | 2016-08 | ||
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- Definition Available for sale securities maturities month. No definition available.
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- Definition Realized gains and losses related to unrealized gains and losses in accumulated comprehensive income. No definition available.
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- Definition Weighted average maturity for available for sale securities. No definition available.
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- Definition This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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