| Marketable securities |
|
|
| September 30, 2020
|
|
|
|
| Cost Basis
|
|
| Gross Unrealized Gains
|
|
| Gross Unrealized Losses
|
|
| Fair Value
|
|
| Cerficates of deposits
|
| $ | 8,282,000 |
|
| $ | 22,000 |
|
| $ | — |
|
| $ | 8,304,000 |
|
| Fixed income mutual funds
|
|
| 9,616,000 |
|
|
| — |
|
|
| (24,000 | ) |
|
| 9,592,000 |
|
| Corporate bonds and notes
|
|
| 3,371,000 |
|
|
| 26,000 |
|
|
| (22,000 | ) |
|
| 3,375,000 |
|
| Total marketable securities
|
| $ | 21,269,000 |
|
| $ | 48,000 |
|
| $ | (46,000 | ) |
| $ | 21,271,000 |
|
|
|
| December 31, 2019
|
|
|
|
| Cost Basis
|
|
| Gross Unrealized Gains
|
|
| Gross Unrealized Losses
|
|
| Fair Value
|
|
| Certificates of deposit
|
| $ | 8,953,000 |
|
| $ | 6,000 |
|
| $ | — |
|
| $ | 8,959,000 |
|
| Fixed income mutual funds
|
|
| 7,878,000 |
|
|
| 1,000 |
|
|
| — |
|
|
| 7,879,000 |
|
| Corporate bonds and notes
|
|
| 8,813,000 |
|
|
| 112,000 |
|
|
| (33,000 | ) |
|
| 8,892,000 |
|
| Total marketable securities
|
| $ | 25,644,000 |
|
| $ | 119,000 |
|
| $ | (33,000 | ) |
| $ | 25,730,000 |
|
|