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v3.22.1

(1) Summary of Significant Accounting Policies (Details - Options outstanding and exercisable) - shares shares in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 12,028 | 13,074
Number of shares, exercisable | 8,068 | 9,685
$0.95 - $1.99 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 34 | 577
Number of shares, exercisable | 34 | 577
$2.00 - $2.99 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 1,517 | 1,517
Number of shares, exercisable | 489 | 489
$3.00 - $3.99 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 4,172 | 4,285
Number of shares, exercisable | 3,270 | 3,382
$4.00 - $4.99 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 2,847 | 2,870
Number of shares, exercisable | 1,567 | 1,410
$5.00 - $5.99 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 0 | 0
Number of shares, exercisable | 0 | 0
$6.00 - $6.99 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 1,933 | 2,651
Number of shares, exercisable | 1,933 | 2,652
$7.00 - $7.99 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 775 | 1,175
Number of shares, exercisable | 775 | 1,175
Range 8 [Member] |  |
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items] |  |
Number of shares, outstanding | 750 | 0
Number of shares, exercisable | 0 | 0

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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