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Summary of Significant Accounting Policies (Details - Stock purchases) - Common Stock [Member] - $ / shares
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Share Repurchase Program [Line Items]    
Total stock purchases, shares 526,652 1,297,713
Total stock purchases, average price $ 9.76 $ 8.61
Open Market Purchases [Member]    
Share Repurchase Program [Line Items]    
Total stock purchases, shares 76,880 473,202
Total stock purchases, average price $ 9.72 $ 8.67
Shares Redeemed [Member]    
Share Repurchase Program [Line Items]    
Total stock purchases, shares 449,772 824,511
Total stock purchases, average price $ 9.76 $ 8.57