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Investments and Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2015
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Schedule of Investments | The following table is a summary of the Company’s investments:
|  | March 31, 2015 |  |  | December 31, 2014 |
|  | Held-to- Maturity |  |  | Held-to- Maturity |
Federal agency debt instruments |  | $ | 21,629 |  |  | $ | 13,990 |
Schedule of Unrealized Gains, Losses, and Fair Value of Investments | The following table summarizes unrealized gains, losses, and fair value of investments:
|  | March 31, 2015 |  |  | December 31, 2014 |
|  | Held-to- Maturity |  |  | Held-to-Maturity |
Cost/amortized cost |  | $ | 21,629 |  |  | $ | 13,990 |
Gross unrealized gains |  |  | 146 |  |  |  | 112 |
Gross unrealized losses |  |  | (259 | ) |  |  | (386 | )
Fair value |  | $ | 21,516 |  |  | $ | 13,716 |
Schedule of Maturity Profile of Investments | The following table sets forth the maturity profile of investments; however these investments may be called prior to maturity date:
|  | March 31, 2015 |  |  | December 31, 2014 |
|  | Held-to- Maturity |  |  | Held-to-Maturity |
Due within one year |  | $ | — |  |  | $ | — |
Due one year through five years |  |  | 9,380 |  |  |  | 1,409 |
Due five years through ten years |  |  | 825 |  |  |  | 350 |
Due over ten years |  |  | 11,424 |  |  |  | 12,231 |
Total |  | $ | 21,629 |  |  | $ | 13,990 |

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