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Note 13 - Stockholders' Equity (Details Textual) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		18 Months Ended
	Mar. 31, 2023	Jun. 30, 2022	Sep. 30, 2022	Feb. 10, 2023	Feb. 09, 2023	Feb. 10, 2022	Feb. 09, 2021
Stock Buyback Program 2023 [Member]
Stock Repurchase Program, Authorized Amount				$ 40	$ 40
Stock Repurchased and Retired During Period, Shares (in shares)	0
Stock Buyback Program 2022 [Member]
Stock Repurchase Program, Authorized Amount						$ 40
Stock Repurchased and Retired During Period, Shares (in shares)		0
Stock Buyback Program 2021 [Member]
Stock Repurchase Program, Authorized Amount							$ 40
Stock Repurchased and Retired During Period, Shares (in shares)			0

X

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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X

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

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-Topic 210
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-Section S99
-Paragraph 1
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-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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