Shareholders' Equity (Details - Stock purchases) - Common Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Equity, Class of Treasury Stock [Line Items]
Total stock purchases, shares	1,976,356	4,139,664
Total stock purchases, average price per share	$ 10.26	$ 11.11
Open Market Purchases [Member]
Equity, Class of Treasury Stock [Line Items]
Total stock purchases, shares	670,968	3,246,511
Total stock purchases, average price per share	$ 10.20	$ 10.44
Shares Redeemed [Member]
Equity, Class of Treasury Stock [Line Items]
Total stock purchases, shares	1,305,388	893,153
Total stock purchases, average price per share	$ 10.29	$ 13.56
Other Share Repurchases [Member]
Equity, Class of Treasury Stock [Line Items]
Total stock purchases, shares	0	0
Total stock purchases, average price per share	$ 0	$ 0