Note 6 - Share-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions | | | 3 Months Ended | 6 Months Ended | 9 Months Ended |
May 10, 2024 | May 01, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2024 |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) | | | | | | 5 years |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | | | | | | $ 4.27 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | | | | $ 2.5 | | $ 2.5 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | 1 year 6 months | | |
Share-Based Payment Arrangement, Option [Member] | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | | | | $ 0.8 | | $ 0.8 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | | | 1 year |
Stock Appreciation Rights (SARs) [Member] | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | | | | 0.3 | | $ 0.3 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | | | 1 year |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | | | | | | $ 3.8 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | [1] | | | | 79,128 | |
Restricted Stock [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | | | | 3 years |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | | | | $ 3.8 | | $ 3.8 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | | | 1 year 8 months 12 days |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | | | | | | $ 14.77 |
Performance Shares [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | | | | | | $ 14.73 |
Performance Shares [Member] | Share-Based Payment Arrangement, Tranche One [Member] | | | | | | |
Share based Compensation Arrangement By Share based Payment Award Award Vesting Rights Requirement Percentage Of Closing Share Price | | 115% | | | | |
Performance Shares [Member] | Share-Based Payment Arrangement, Tranche Two [Member] | | | | | | |
Share based Compensation Arrangement By Share based Payment Award Award Vesting Rights Requirement Percentage Of Closing Share Price | | 130% | | | | |
Performance Shares [Member] | Share-Based Payment Arrangement, Tranche Three [Member] | | | | | | |
Share based Compensation Arrangement By Share based Payment Award Award Vesting Rights Requirement Percentage Of Closing Share Price | | 150% | | | | |
Outside Directors [Member] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) | | | | | | 10 years |
Michael Benstock [Member] | Performance Shares [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | | | 125,000 | | | |
Michael Koempel [Member] | Performance Shares [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | | | 75,000 | | | |
Minimum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | | | | 1 year |
Minimum [Member] | Performance Shares [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | | | | 3 years |
Maximum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | | | | 3 years |
Maximum [Member] | Restricted Stock [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | | | | 5 years |
Maximum [Member] | Performance Shares [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | | | | 5 years |
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[1]The weighted average grant date fair value of SARs granted was $3.80 per share. | |