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Fair Value Measurements - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Jun. 30, 2014
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Sep. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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| Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] | ||||
| Available-for-sale debt securities at fair value | $ 43.6 | $ 3.2 | ||
| Available-for-sale debt securities at cost | 41.4 | |||
| Realized gain on sale of investments | 2.2 | 2.2 | ||
| Cash deposits held in U.S. banks | 68.2 | 81.7 | ||
| Bank deposits | $ 65.5 | $ 80.8 | ||
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Minimum [Member]
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| Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] | ||||
| Discount rates based on market observations | 7.00% | |||
| Discount rates to determine fair market value of underlying assets | 8.00% | |||
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Maximum [Member]
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| Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] | ||||
| Discount rates based on market observations | 15.00% | |||
| Discount rates to determine fair market value of underlying assets | 10.00% |
| X | ||||||||||
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- Definition
Available For Sale Securities Debt Securities Carrying Value No definition available.
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- Definition
Cash Federal Deposit Insurance Corporation Non Insured Amount. No definition available.
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- Definition
Discount rate which is used to value residual cash flows generated by financial assets of the securitization, asset-backed financing arrangement, or similar transfer for initial fair value measurement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of debt securities categorized neither as held-to-maturity nor trading. 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
Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. 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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- Details
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