(1) Summary of Significant Accounting Policies (Details - Stock purchases) - Common Stock [Member] - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Equity, Class of Treasury Stock [Line Items]
Total stock purchases, shares	1,217,451	178,731
Total stock purchases, average price per share	$ 11.55	$ 4.22
Open Market Purchases[Member]
Equity, Class of Treasury Stock [Line Items]
Total stock purchases, shares	922,363	138,004
Total stock purchases, average price per share	$ 11.19	$ 4.18
Shares Redeemed [Member]
Equity, Class of Treasury Stock [Line Items]
Total stock purchases, shares	295,088	40,727
Total stock purchases, average price per share	$ 12.68	$ 4.36