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(1) Summary of Significant Accounting Policies (Details - Stock purchases) - Common Stock [Member] - $ / shares
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Equity, Class of Treasury Stock [Line Items]    
Total stock purchases, shares 3,510,701 791,683
Total stock purchases, average price per share $ 11.80 $ 4.99
Open Market Purchases[Member]    
Equity, Class of Treasury Stock [Line Items]    
Total stock purchases, shares 2,617,548 734,700
Total stock purchases, average price per share $ 11.20 $ 5.03
Shares Redeemed [Member]    
Equity, Class of Treasury Stock [Line Items]    
Total stock purchases, shares 893,153 56,983
Total stock purchases, average price per share $ 13.56 $ 4.47