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Note 5 - Stockholders' Equity (Details Textual) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Jul. 15, 2021	Sep. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 shares	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) $ / shares shares	Jan. 24, 2022 USD ($)	Apr. 16, 2019 shares
Preferred Stock, Shares Authorized (in shares)		5,000,000		5,000,000		5,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares		$ 0.0001		$ 0.0001		$ 0.0001
Preferred Stock, Shares Issued (in shares)		0		0		0
Common Stock, Shares Authorized (in shares)		500,000,000		500,000,000		500,000,000
Common Stock, Shares, Issued (in shares)		26,452,242		26,452,242		24,772,987
Common Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares		$ 0.0001		$ 0.0001		$ 0.0001
Additional Paid in Capital, Common Stock \| $		$ 486,198		$ 486,198		$ 350,597
Stock Issued During Period, Shares, New Issues (in shares)		1,380,000
Shares Issued, Price Per Share (in dollars per share) \| $ / shares		$ 88		$ 88
Proceeds from Issuance of Common Stock, Net of Underwriter Discounts Commissions and Estimated Offering Expenses \| $		$ 115,700		$ 115,724	$ 0
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)				17,100
Share Repurchase Program, Authorized, Amount \| $							$ 100,000
Treasury Stock, Shares, Acquired (in shares)			0
Preferred Stock, Shares Outstanding (in shares)		0		0		0
Common Stock, Shares, Outstanding (in shares)		26,452,242		26,452,242		24,772,987
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)				10 years
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount \| $		$ 300		$ 300
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				4 months 24 days
Share-Based Payment Arrangement, Option [Member] \| Share-Based Payment Arrangement, Tranche One [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				2 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage				25.00%
Share-Based Payment Arrangement, Option [Member] \| Share-Based Payment Arrangement, Tranche One [Member] \| Maximum [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, Award Vesting Rights, Percentage				50.00%
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				1 year 10 months 24 days
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount \| $		16,800		$ 16,800
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				1 year
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				5 years
Performance Shares [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				1 year 10 months 24 days
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount \| $		$ 9,100		$ 9,100
Number of Stock Price Milestones Achieved		0		0
Predetermined Performance Achievement, Percentage	100.00%
Performance Shares [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Number of Days, Achievement of Milestone Stock Price				30
Share-based Compensation Arrangement by Share-based Payment Award, Award Service Period (Year)				5 years
Performance Shares [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Service Period (Year)				3 years
Employee Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)								240,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Available for Issuance, Authorized Annual Increase, Maximum (in shares)								240,000
Equity Incentive Plan 2019 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)		3,674,358		3,674,358				2,400,000
Share Based Compensation Arrangement By Share Based Payment Award Percentage, Number of Additional Shares Available for Grant								3.00%
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)		180,000