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Summary of Significant Accounting Policies (Details - Stock purchases) - Common Stock [Member] - $ / shares
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Equity, Class of Treasury Stock [Line Items]    
Total stock purchases, shares 207,113 721,577
Total stock purchases, average price $ 8.19 $ 10.11
Open Market Purchases [Member]    
Equity, Class of Treasury Stock [Line Items]    
Total stock purchases, shares 101,355 263,185
Total stock purchases, average price $ 8.51 $ 10.42
Shares Redeemed [Member]    
Equity, Class of Treasury Stock [Line Items]    
Total stock purchases, shares 105,758 458,392
Total stock purchases, average price $ 7.89 $ 9.93