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CASH, CASH EQUIVALENTS AND INVESTMENTS (Tables) | 6 Months Ended
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Jun. 30, 2015
Cash and Cash Equivalents [Abstract] |
Cash, cash equivalents and investments | Investments as of June 30, 2015 and December 31, 2014 consisted of the following (in thousands):
|  | Amortized |  | Unrealized |  | Aggregate Fair
Investment Classification |  | Cost |  | Gains |  | (Losses) |  | Market Value
June 30, 2015 |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 11,535 |  |  | $ | 14 |  |  | $ | (5 | ) |  | $ | 11,544 |
Corporate bonds |  | 233,923 |  |  | 7 |  |  | (56 | ) |  | 233,874 |
U.S. Government bonds |  | 5,460 |  |  | — |  |  | (4 | ) |  | 5,456 |
|  | $ | 250,918 |  |  | $ | 21 |  |  | $ | (65 | ) |  | $ | 250,874 |
December 31, 2014 |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 11,373 |  |  | $ | 4 |  |  | $ | (13 | ) |  | $ | 11,364 |
Corporate bonds |  | 228,799 |  |  | 14 |  |  | (41 | ) |  | 228,772 |
U.S. Government bonds |  | 5,999 |  |  | — |  |  | — |  |  | 5,999 |
|  | $ | 246,171 |  |  | $ | 18 |  |  | $ | (54 | ) |  | $ | 246,135 |

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- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
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