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Note 10 - Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  |  |  |  |  | Exercise Price |
|  | Shares |  |  | Per Option |
Options outstanding, December 31, 2019 |  |  | 1,326,414 |  |  | $ | 2.86 |
Granted to employees and directors |  |  | - |  |  |  | - |
Exercised |  |  | (757,674 | ) |  |  | 2.64 |
Canceled/expired/forfeited |  |  | - |  |  |  | - |
Options outstanding, December 31, 2020 |  |  | 568,740 |  |  |  | 3.42 |
Granted to employees and directors |  |  | - |  |  |  | - |
Exercised |  |  | (134,494 | ) |  |  | 3.17 |
Canceled/expired/forfeited |  |  | (6,666 | ) |  |  | 3.62 |
Options outstanding, December 31, 2021 |  |  | 427,580 |  |  |  | 3.50 |
Options exercisable, December 31, 2021 |  |  | 315,583 |  |  |  | 3.47 |
Share-based Payment Arrangement, Activity [Table Text Block] |
|  |  |  | Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices |  | Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contract Life (in years) |  |  | Aggregate Intrinsic Value |  |  | Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contract Life (in years) |  |  | Aggregate Intrinsic Value |
$3.42 | - | $3.90 |  |  | 427,580 |  |  | $ | 3.50 |  |  |  | 1.91 |  |  | $ | 1,056,000 |  |  |  | 315,583 |  |  | $ | 3.47 |  |  |  | 1.77 |  |  | $ | 790,000 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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