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(1) Summary of Significant Accounting Policies (Details - Stock purchases) - Common Stock [Member] - $ / shares | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Schedule of Capitalization, Equity [Line Items] |  |
Total stock purchases, shares | 291,156 | 378,470
Total stock purchases, average price per share | $ 3.32 | $ 3.97
Open Market Purchases[Member] |  |
Schedule of Capitalization, Equity [Line Items] |  |
Total stock purchases, shares | 44,247 | 335,546
Total stock purchases, average price per share | $ 2.94 | $ 3.95
Shares Redeemed [Member] |  |
Schedule of Capitalization, Equity [Line Items] |  |
Total stock purchases, shares | 46,909 | 18,424
Total stock purchases, average price per share | $ 2.86 | $ 3.76
Other Repurchases [Member] |  |
Schedule of Capitalization, Equity [Line Items] |  |
Total stock purchases, shares | 200,000 | 24,500
Total stock purchases, average price per share | $ 3.51 | $ 4.20

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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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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 http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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