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Note 11 - Fair Value Measurements - Changes in Fair Value of Level 3 Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Contingent Payments [Member]
Balance at beginning of reporting period, liability	$ (924)	$ (1,712)
Included in interest income (expense), liability	(29)	(82)
Included in other comprehensive income (loss), liability	0	0
Included in other items, net, liability	52	192
Settlements, liability	839	678
Balance at end of reporting period, liability	(62)	(924)
Investment, Available-For-Sale [Member]
Balance at beginning of reporting period, asset	16,692	16,151
Included in interest income (expense), asset	161	156
Included in other comprehensive income (loss), asset	(441)	935
Included in other items, net, asset	0	0
Settlements, asset	(590)	(550)
Balance at end of reporting period, asset	$ 15,822	$ 16,692

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- Definition

Amount of gain (loss) recognized in other items, net from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

No definition available.

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+ References

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-Publisher FASB
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-SubTopic 10
-Section 50
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
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- Definition

Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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+ References

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