| Marketable securities |
|
|
| June 30, 2020
|
|
|
|
| Cost
Basis
|
|
| Gross
Unrealized
Gains
|
|
| Gross
Unrealized
Losses
|
|
| Fair Value
|
|
| Certificates of deposit
|
| $
| 9,516,000
|
|
| $
| 56,000
|
|
| $
| —
|
|
| $
| 9,572,000
|
|
| Fixed income mutual funds
|
|
| 8,692,000
|
|
|
| —
|
|
|
| (64,000
| )
|
|
| 8,628,000
|
|
| Corporate bonds and notes
|
|
| 5,492,000
|
|
|
| 88,000
|
|
|
| (17,000
| )
|
|
| 5,563,000
|
|
| Total marketable securities
|
| $
| 23,700,000
|
|
| $
| 144,000
|
|
| $
| (81,000
| )
|
| $
| 23,763,000
|
|
|
|
| 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
|
|
|