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Note 14 - Stockholders' Equity (Details Textual) - USD ($) shares in Thousands, $ in Millions	3 Months Ended	9 Months Ended		18 Months Ended
	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Feb. 10, 2022	Feb. 09, 2021	Feb. 13, 2020	Feb. 12, 2020
Stock Buyback Program 2022 [Member]
Stock Repurchase Program, Authorized Amount					$ 40
Stock Repurchased and Retired During Period, Shares (in shares)	0	0
Stock Buyback Program 2021 [Member]
Stock Repurchase Program, Authorized Amount						$ 40
Stock Repurchased and Retired During Period, Shares (in shares)		0	0	0
Stock Buyback Program 2020 [Member]
Stock Repurchase Program, Authorized Amount							$ 40	$ 40
Stock Repurchased and Retired During Period, Shares (in shares)			0

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- Definition

Amount of stock repurchase plan authorized.

+ References

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- Definition

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

+ References

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-Topic 210
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