Financial Instruments - Additional Information (Detail) |
6 Months Ended | 12 Months Ended |
|---|---|---|
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Jun. 30, 2015
USD ($)
debt_security
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Dec. 31, 2014
USD ($)
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| Debt Instrument [Line Items] | ||
| Number of corporate debt securities | debt_security | 14 | |
| Fair value of debt securities, continuous unrealized loss position | $ 23,300,000 | |
| Gross unrealized losses | (16,000) | $ (50,000) |
| Transfer of securities, Level 1 | 0 | |
| Transfer of securities, Level 2 | 0 | |
| Transfer of securities, Level 3 | $ 0 | |
| Minimum [Member] | ||
| Debt Instrument [Line Items] | ||
| Due date of company's long term available for sale securities | 1 year | |
| Maximum [Member] | ||
| Debt Instrument [Line Items] | ||
| Period of unrealized loss position | 12 months | |
| Due date of company's long term available for sale securities | 2 years | |
| Level 3 [Member] | Minimum [Member] | ||
| Debt Instrument [Line Items] | ||
| Discount factor (as a percent) | 0.71% | 0.54% |
| Level 3 [Member] | Maximum [Member] | ||
| Debt Instrument [Line Items] | ||
| Discount factor (as a percent) | 0.36% | 0.33% |
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- Definition Available for sale securities noncurrent maturity period. No definition available.
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- Definition Period of unrealized loss position. No definition available.
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- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. 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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- Definition Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. No definition available.
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- Details
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