Represents the offering price per related warrant.

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- Definition

The percentage of gross sales for commission fee under the equity distribution agreement.

+ References

No definition available.

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The maximum aggregate offering price under the equity distribution agreement.

+ References

No definition available.

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The number of shares for warrants in over allotment options.

+ References

No definition available.

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Represents the maximum additional shares available for purchase during the optional purchase period.

+ References

No definition available.

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- Definition

Represents the period granted to the company by the underwriter as an option to purchase shares.

+ References

No definition available.

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- Definition

Amount of stock authorized for sale.

+ References

No definition available.

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- Definition

The price per share of shares and warrants issued.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 505
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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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Per share or per unit amount of equity securities issued.

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No definition available.

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- Definition

Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Amount of stock repurchase plan authorized.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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Note A - Description of Business and Basis of Presentation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended
	Jul. 12, 2021	Feb. 01, 2021	Jan. 12, 2021	Jan. 08, 2021	Mar. 31, 2022	Dec. 31, 2021	Dec. 20, 2021	Jul. 02, 2021	Feb. 03, 2021
Sale of Stock, Authorized Amount	$ 350,000
Stock Repurchase Program, Authorized Amount							$ 50,000
Treasury Stock, Value, Total					$ 7,536	$ 2,814
Share Repurchase Program [Member]
Treasury Stock, Shares, Total (in shares)					909,953
Treasury Stock, Value, Total					$ 7,500
Roth Capital Partners, LLC [Member] \| Pre-funded Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			926,844	926,844
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 0.0001
Roth Capital Partners, LLC [Member] \| Public Offering Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			12,078,361	7,692,307
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 6.50	$ 6.50
Class of Warrant or Right, Offering Price, Per Related Warrant (in dollars per share)				$ 0.0001
Roth Capital Partners, LLC [Member] \| Underwriter Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			806,932	754,035					18,702
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 8.125
Over Allotment Options, Number of Shares for Warrants (in shares)				1,153,846
Underwriting Agreement [Member] \| Roth Capital Partners, LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)				6,765,463
Shares and Warrants Issued, Price Per Share (in dollars per share)				$ 6.50
Shares Issued, Price Per Share (in dollars per share)				$ 6.4999
Proceeds from Issuance or Sale of Equity, Total			$ 52,400
Over-Allotment Option [Member] \| Roth Capital Partners, LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)		374,035
Purchase Agreement Optional Period to Shares (Day)				45 days
Purchase Agreement, Maximum, Additional Shares Available for Purchase During the Optional Period (in shares)				1,153,846
ATM Agreement Sales [Member] \| JMP and RBCCM [Member]
Stock Issued During Period, Shares, New Issues (in shares)					0
Equity Distribution Agreement, Maximum Aggregate Offering Price								$ 75,000
Equity Distribution Agreement, Commission Fee, Percentage of Gross Sales								3.00%
Stock Issued During Period, Value, New Issues	$ 75,000