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Summary of Significant Accounting Policies (Details - Stock purchases) - Common Stock [Member] - $ / shares | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023
Share Repurchase Program [Line Items] |  |
Total stock purchases, shares | 1,469,658 | 1,850,560
Total stock purchases, average price | $ 8.73 | $ 11.80
Open Market Purchases [Member] |  |
Share Repurchase Program [Line Items] |  |
Total stock purchases, shares | 473,202 | 625,887
Total stock purchases, average price | $ 8.67 | $ 11.20
Shares Redeemed [Member] |  |
Share Repurchase Program [Line Items] |  |
Total stock purchases, shares | 876,456 | 1,224,673
Total stock purchases, average price | $ 8.66 | $ 13.56
Other [Member] |  |
Share Repurchase Program [Line Items] |  |
Total stock purchases, shares | 120,000 | 0
Total stock purchases, average price | $ 9.49 | $ 0

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