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CASH, CASH EQUIVALENTS AND INVESTMENTS (Tables) | 3 Months Ended
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Mar. 31, 2014
Cash and Cash Equivalents [Abstract] |
Cash, Cash Equivalents and Investments [Table Text Block] | These securities are carried at fair market value, with unrealized gains and losses reported in shareholders’ equity. Gains or losses on securities sold are based on the specific identification method. Investments as of March 31, 2014 and December 31, 2013 consist of the following (in thousands):
|  | Amortized |  | Unrealized |  | Aggregate Fair
Investment Classification |  | Cost |  | Gains |  | (Losses) |  | Market Value
March 31, 2014 |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 10,881 |  |  | $ | 4 |  |  | $ | (10 | ) |  | $ | 10,875 |
Corporate bonds |  | 218,771 |  |  | 37 |  |  | (17 | ) |  | 218,791 |
U.S. Government bonds |  | 4,075 |  |  | — |  |  | — |  |  | 4,075 |
Convertible notes |  | 300 |  |  | — |  |  | — |  |  | 300 |
|  | $ | 234,027 |  |  | $ | 41 |  |  | $ | (27 | ) |  | $ | 234,041 |
December 31, 2013 |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 11,358 |  |  | $ | 2 |  |  | $ | (16 | ) |  | $ | 11,344 |
Corporate bonds |  | 190,738 |  |  | 33 |  |  | (48 | ) |  | 190,723 |
U.S. Government bonds |  | 3,074 |  |  | — |  |  | — |  |  | 3,074 |
Convertible notes |  | 4,300 |  |  | — |  |  | — |  |  | 4,300 |
|  | $ | 209,470 |  |  | $ | 35 |  |  | $ | (64 | ) |  | $ | 209,441 |

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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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