| Schedule of marketable securities |
| Schedule of marketable securities |
March
31, 2023 |
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| Certificates of deposit |
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$ |
2,976,000 |
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$ |
21,000 |
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$ |
— |
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$ |
2,997,000 |
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| Government securities |
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25,992,000 |
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204,000 |
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— |
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26,196,000 |
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| Fixed income mutual funds |
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7,504,000 |
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45,000 |
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— |
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7,549,000 |
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| Corporate bond |
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178,000 |
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— |
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— |
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178,000 |
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| Total marketable securities |
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$ |
36,650,000 |
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$ |
270,000 |
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$ |
— |
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$ |
36,920,000 |
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| Government Securities |
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$ |
20,781,000 |
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$ |
67,000 |
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$ |
— |
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$ |
20,848,000 |
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| Fixed income mutual funds |
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11,904,000 |
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— |
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(915,000 |
) |
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10,989,000 |
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| Certificates of Deposit |
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3,019,000 |
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— |
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(43,000 |
) |
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2,976,000 |
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| Corporate bonds and notes |
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192,000 |
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— |
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(14,000 |
) |
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178,000 |
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| Total marketable securities |
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$ |
35,896,000 |
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$ |
67,000 |
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$ |
(972,000 |
) |
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$ |
34,991,000 |
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