Summary of Significant Accounting Policies (Details - Options outstanding and exercisable) - shares shares in Thousands	Jun. 30, 2024	Dec. 31, 2023
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of shares, outstanding	6,487	8,125
Number of shares, exercisable	5,127	6,062
$2.00 - $2.99 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of shares, outstanding	1,290	1,410
Number of shares, exercisable	1,290	1,082
$3.00 - $3.99 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of shares, outstanding	2,203	2,473
Number of shares, exercisable	2,203	2,473
$4.00 - $4.99 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of shares, outstanding	1,322	2,539
Number of shares, exercisable	712	1,929
$10.00 - $10.99 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of shares, outstanding	1,672	1,703
Number of shares, exercisable	922	578

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.

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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
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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