XML 41 R28.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Note 7 - Stockholders' Equity (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Notes Tables |
Dividends Declared [Table Text Block] |
Declaration date |  | Dividend |  |  | Total paid |
September 1, 2020 |  | $ | 0.05 |  |  | $ | 677,869 |
December 1, 2020 |  |  | 0.05 |  |  |  | 679,779 |
March 1, 2021 |  |  | 0.05 |  |  |  | 680,247 |
June 1, 2021 |  |  | 0.06 |  |  |  | 816,604 |
September 1, 2021 |  |  | 0.06 |  |  |  | 821,628 |
December 1, 2021 |  |  | 0.06 |  |  |  | 822,120 |
Class of Treasury Stock [Table Text Block] |
|  | Total shares purchased |  |  | Average price per share |  |  | Total number of shares purchased as part of publicly announced plan |  |  | Approximate dollar value of shares that may be purchased under the plan |
July, 2020 |  |  | 675 |  |  | $ | 6.21 |  |  |  | 675 |  |  | $ | 1,200,000 |
August, 2020 |  |  | 22,963 |  |  |  | 6.20 |  |  |  | 23,638 |  |  |  | 1,000,000 |
Total |  |  | 23,638 |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
Name: | us-gaap_DividendsDeclaredTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 Reference 2: 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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
Name: | us-gaap_ScheduleOfTreasuryStockByClassTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration