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(1) Summary of Significant Accounting Policies (Details - Stock purchases) - Common Stock [Member] - $ / shares | 3 Months Ended
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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

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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