| Schedule of Marketable Securities |
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December
31, 2015 |
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December
31, 2014 |
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Gross
unrealized |
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Gross
unrealized |
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Fair |
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Gross
unrealized |
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Gross
unrealized |
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Fair |
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Cost |
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|
gains |
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|
Losses |
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|
value |
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|
Cost |
|
|
gains |
|
|
losses |
|
|
value |
|
| Available-for-sale: |
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| US Government
treasuries |
|
$ |
1,898 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
1,898 |
|
|
$ |
3,349 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
3,349 |
|
| Equity securities |
|
$ |
703 |
|
|
$ |
458 |
|
|
$ |
- |
|
|
$ |
1,161 |
|
|
$ |
703 |
|
|
$ |
482 |
|
|
$ |
- |
|
|
$ |
1,185 |
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| |
|
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|
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|
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|
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|
|
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| |
|
$ |
2,601 |
|
|
$ |
458 |
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|
$ |
- |
|
|
$ |
3,059 |
|
|
$ |
4,052 |
|
|
$ |
482 |
|
|
$ |
- |
|
|
$ |
4,534 |
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|