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Investments | 9 Months Ended
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Sep. 30, 2013
Investments [Abstract] |
Investments | Note 6 - Investments Investments classified as available-for-sale as of September 30, 2013 and December 31, 2012 were comprised of (in thousands):
|  | September 30, 2013 |  |  | December 31, 2012 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Auction rate securities |  | $ | 1,175 |  |  | $ | 601 |  |  | $ | - |  |  | $ | 1,776 |  |  | $ | 1,175 |  |  | $ | 409 |  |  | $ | - |  |  | $ | 1,584 |
Corporate debt securities |  |  | 22,137 |  |  |  | 4 |  |  |  | - |  |  |  | 22,141 |  |  |  | 31,340 |  |  |  | 21 |  |  |  | - |  |  |  | 31,361 |
Total |  | $ | 23,312 |  |  | $ | 605 |  |  | $ | - |  |  | $ | 23,917 |  |  | $ | 32,515 |  |  | $ | 430 |  |  | $ | - |  |  | $ | 32,945 |

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