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Investments - Summary of Investments (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Investments Debt And Equity Securities [Abstract] |  |
Certificates of deposit, U.S. Treasury securities and obligations of U.S. Government agencies, Corporate debt and other securities,Current | $ 12,300 | $ 10,624
Certificates of deposit, U.S. Treasury securities and obligations of U.S. Government agencies, Corporate debt and other securities,Non-Current | $ 19,021 | $ 16

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- Definition certificates of deposit and other securities current + References No definition available. + Details
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- Definition Other Securities Non Current + References No definition available. + Details
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- Details
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