| Marketable securities |
| |
|
September 30, 2019 |
|
| |
|
Cost
Basis
|
|
|
Gross Unrealized Gains |
|
|
Gross Unrealized Losses |
|
|
Fair Value |
|
| Certificates of deposit |
|
$ |
4,500,000 |
|
|
$ |
8,000 |
|
|
$ |
― |
|
|
$ |
4,508,000 |
|
| Fixed income mutual funds |
|
|
15,810,000 |
|
|
|
9,000 |
|
|
|
― |
|
|
|
15,819,000 |
|
| Corporate bonds and notes |
|
|
10,854,000 |
|
|
|
176,000 |
|
|
|
(74,000 |
) |
|
|
10,956,000 |
|
| Total marketable securities |
|
$ |
31,164,000 |
|
|
$ |
193,000 |
|
|
$ |
(74,000 |
) |
|
$ |
31,283,000 |
|
| |
|
December 31, 2018 |
|
| |
|
Cost
Basis
|
|
|
Gross Unrealized Gains |
|
|
Gross Unrealized Losses |
|
|
Fair Value |
|
| Certificates of deposit |
|
$ |
13,151,000 |
|
|
$ |
― |
|
|
$ |
― |
|
|
$ |
13,151,000 |
|
| Fixed income mutual funds |
|
|
9,648,000 |
|
|
|
― |
|
|
|
(8,000 |
) |
|
|
9,640,000 |
|
| Corporate bonds and notes |
|
|
8,518,000 |
|
|
|
― |
|
|
|
(81,000 |
) |
|
|
8,437,000 |
|
| Total marketable securities |
|
$ |
31,317,000 |
|
|
|
― |
|
|
$ |
(89,000 |
) |
|
$ |
31,228,000 |
|
|