(1) Summary of Significant Accounting Policies (Details Narrative) - USD ($)	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation	$ 790,000	$ 408,000
Unrecognized stock-based compensation costs	$ 8,400,000
Weighted-average period for unrecognized costs	2 years 4 months 24 days
Intrinsic value options outstanding	$ 64,300,000
Intrinsic value of options exercisable	$ 43,700,000
Options exercised	1,366,000
Intrinsic value of options exercised	$ 10,200,000	$ 122,000
Shares available for grant	3,561,000
Options Exercised [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options exercised	98,000

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
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Amount of noncash expense for share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Number of share options (or share units) exercised during the current period.

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