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Marketable Securities (Details - Contractual maturities) $ in Thousands | Mar. 31, 2022 USD ($)
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Net Investment Income [Line Items] |
Fair Value | $ 101,301
Due After One Year Through Five Years [Member] |
Net Investment Income [Line Items] |
Fair Value | 76,781
Due In One Years [Member] |
Net Investment Income [Line Items] |
Fair Value | 11,159
Due After Five Years Through Ten Years [Member] |
Net Investment Income [Line Items] |
Fair Value | 4,501
Due After Ten Years [Member] |
Net Investment Income [Line Items] |
Fair Value | $ 8,860

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