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Investments (Tables) | 6 Months Ended
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Jun. 30, 2018
Schedule of Held-to-maturity Securities [Line Items] |
Schedule of Investments in Fixed Maturity Securities | At December 31, 2017, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:
(in thousands) | Cost |  | Gross unrealized gains |  | Gross unrealized losses |  | Fair value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities | $ | 29,970 |  |  | $ | — |  |  | $ | (206 | ) |  | $ | 29,764 |
Corporate debt | 1,072 |  |  | 12 |  |  | — |  |  | 1,084 |
Total | $ | 31,042 |  |  | $ | 12 |  |  | $ | (206 | ) |  | $ | 30,848 |
At June 30, 2018, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:
(in thousands) | Cost |  | Gross unrealized gains |  | Gross unrealized losses |  | Fair value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities | $ | 22,717 |  |  | $ | 1 |  |  | $ | (373 | ) |  | $ | 22,345 |
Corporate debt | 823 |  |  | 1 |  |  | (2 | ) |  | 822 |
Total | $ | 23,540 |  |  | $ | 2 |  |  | $ | (375 | ) |  | $ | 23,167 |
Summary of Unrealized Loss Position | he following table shows the investments’ gross unrealized loss and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of June 30, 2018:
| Less than 12 Months |  | 12 Months or More |  | Total
(in thousands) | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities | $ | 18,495 |  |  | $ | (337 | ) |  | $ | 3,644 |  |  | $ | (36 | ) |  | $ | 22,139 |  |  | $ | (373 | )
Corporate debt | 654 |  |  | (2 | ) |  | — |  |  | — |  |  | 654 |  |  | (2 | )
Total | $ | 19,149 |  |  | $ | (339 | ) |  | $ | 3,644 |  |  | $ | (36 | ) |  | $ | 22,793 |  |  | $ | (375 | )
December 31, 2017:
| Less than 12 Months |  | 12 Months or More |  | Total
(in thousands) | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipalities | $ | 17,919 |  |  | $ | (157 | ) |  | $ | 11,845 |  |  | $ | (49 | ) |  | $ | 29,764 |  |  | $ | (206 | )
Corporate debt | 400 |  |  | — |  |  | — |  |  | — |  |  | 400 |  |  | — |
Total | $ | 18,319 |  |  | $ | (157 | ) |  | $ | 11,845 |  |  | $ | (49 | ) |  | $ | 30,164 |  |  | $ | (206 | )
Amortized Cost and Fair Value of Fixed Maturity Securities by Contractual Maturity | The amortized cost and estimated fair value of the fixed maturity securities at June 30, 2018 by contractual maturity are set forth below:
(in thousands) | Amortized cost |  | Fair value
Years to maturity: |  |  |
Due in one year or less | $ | 3,086 |  |  | $ | 3,075 |
Due after one year through five years | 20,221 |  |  | 19,859 |
Due after five years | 233 |  |  | 233 |
Total | $ | 23,540 |  |  | $ | 23,167 |
The amortized cost and estimated fair value of the fixed maturity securities at December 31, 2017 by contractual maturity are set forth below:
(in thousands) | Amortized cost |  | Fair value
Years to maturity: |  |  |
Due in one year or less | $ | 16,934 |  |  | $ | 16,899 |
Due after one year through five years | 13,876 |  |  | 13,708 |
Due after five years | 232 |  |  | 241 |
Total | $ | 31,042 |  |  | $ | 30,848 |

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