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Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
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Dec. 31, 2012
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|---|---|---|
| Fair Value Measurements | ||
| Available-for-sale securities | $ 0 | $ 4,411 |
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Certificates of deposit
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| Fair Value Measurements | ||
| Available-for-sale securities | 4,411 | |
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Recurring basis | Fair Value | Certificates of deposit
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| Fair Value Measurements | ||
| Available-for-sale securities | 4,411 | |
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Recurring basis | Significant Other Observable Inputs (Level 2) | Certificates of deposit
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| Fair Value Measurements | ||
| Available-for-sale securities | $ 4,411 |
| X | ||||||||||
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- Definition
Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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