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Investments | 6 Months Ended
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Jun. 30, 2013
Investments [Abstract] |
Investments | Note 5 - Investments Investments classified as available-for-sale as of June 30, 2013 and December 31, 2012 were comprised of (in thousands):
|  |  |  |  | June 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 |  |  | $ | 635 |  |  | $ | - |  |  | $ | 1,810 |  |  | $ | 1,175 |  |  | $ | 409 |  |  | $ | - |  |  | $ | 1,584 |
Corporate debt securities |  |  | 36,213 |  |  |  | 2 |  |  |  | - |  |  |  | 36,215 |  |  |  | 31,340 |  |  |  | 21 |  |  |  | - |  |  |  | 31,361 |
Total |  | $ | 37,388 |  |  | $ | 637 |  |  | $ | - |  |  | $ | 38,025 |  |  | $ | 32,515 |  |  | $ | 430 |  |  | $ | - |  |  | $ | 32,945 |

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