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Investments (Tables) | 12 Months Ended
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Dec. 31, 2013
Investments Debt And Equity Securities [Abstract] |
Schedule of Investments | Investments held are summarized as follows (in thousands):
|  | December 31, 2013 |  |  | December 31, 2012 |
|  | Short-Term |  |  | Long-Term |  |  | Short-Term |  |  | Long-Term |
Municipal debt securities |  | $ | 5,492 |  |  | $ | 34,495 |  |  | $ | 6,088 |  |  | $ | 27,563 |
Federal home loan securities |  |  | — |  |  |  | 22,520 |  |  |  | — |  |  |  | 18,569 |
Certificates of deposit |  |  | 965 |  |  |  | 496 |  |  |  | 496 |  |  |  | 1,461 |
|  | $ | 6,457 |  |  | $ | 57,511 |  |  | $ | 6,584 |  |  | $ | 47,593

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