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Marketable Securities (Tables) | 6 Months Ended
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Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract] |
Unrealized Gain (Loss) on Investments | The amortized cost and estimated fair value of the Company’s Marketable Securities as of June 30, 2016 and December 31, 2015 were as follows:
| June 30, 2016 |  | December 31, 2015
| Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Securities Investments | $ | 6,482 |  |  | $ | 21 |  |  | $ | 3,322 |  |  | $ | 3,181 |  |  | $ | 6,463 |  |  | $ | 10 |  |  | $ | 2,523 |  |  | $ | 3,950 |
Debt Securities Carried by EGL | 40,402 |  |  | 166 |  |  | 5 |  |  | 40,563 |  |  | 37,404 |  |  | 94 |  |  | 8 |  |  | 37,490 |
Investment Funds | 24,476 |  |  | 530 |  |  | 24 |  |  | 24,982 |  |  | 2,291 |  |  | 155 |  |  | 99 |  |  | 2,347 |
Total | $ | 71,360 |  |  | $ | 717 |  |  | $ | 3,351 |  |  | $ | 68,726 |  |  | $ | 46,158 |  |  | $ | 259 |  |  | $ | 2,630 |  |  | $ | 43,787 |
Investments Classified by Contractual Maturity Date | Scheduled maturities of the Company’s available-for-sale debt securities within the Securities Investments portfolio as of June 30, 2016 and December 31, 2015 were as follows:
| June 30, 2016 |  | December 31, 2015
| Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due within one year | $ | 101 |  |  | $ | 101 |  |  | $ | 204 |  |  | $ | 204 |
Due after one year through five years | 1,422 |  |  | 1,442 |  |  | 1,537 |  |  | 1,545 |
Due after five years through 10 years | 237 |  |  | 238 |  |  | — |  |  | — |
Total | $ | 1,760 |  |  | $ | 1,781 |  |  | $ | 1,741 |  |  | $ | 1,749 |

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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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- Definition Tabular disclosure of unrealized gains and losses on investments. + References No definition available. + Details
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