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Note 15 - Stock Option Plans (Details Textual) - USD ($) $ in Thousands			1 Months Ended		12 Months Ended
	Nov. 09, 2022	Oct. 08, 2010	Nov. 30, 2020	Sep. 30, 2015	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Nov. 22, 2006
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value					$ 800	$ 6,400	$ 3,700
Proceeds from Stock Options Exercised					$ 1,096	$ 4,818	985
Common Stock, Shares, Outstanding, Ending Balance (in shares)					10,817,110	10,747,417
Share-Based Payment Arrangement, Expense					$ 5,779	$ 4,592	3,718
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total					$ 8,200
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					2 years 7 months 6 days
Share-Based Payment Arrangement, Expense					$ 5,800	$ 4,600	3,700
Equity Compensation Plan 2006 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)		1,725,000	4,000,000.0	2,475,000					1,250,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)		475,000	1,530,000	750,000
Equity Compensation Plan 2006 [Member] | Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)						7 years
Equity Compensation Plan 2006 [Member] | Automatic Formula Grants of Nonqualified Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						1 year
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)						5 years
The 2022 Wavelo Equity Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	7 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					2 years 10 months 24 days
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	20,000,000
Common Stock, Shares, Outstanding, Ending Balance (in shares)	100,000,000
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount					$ 5,900
Share-Based Payment Arrangement, Expense						$ 1,820	$ 0	$ 0
The 2022 Wavelo Equity Compensation Plan [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage	25.00%

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