Note 12 - Incentive Share Plan (Details Textual) - USD ($)										3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 07, 2024	Mar. 04, 2024	Jan. 01, 2024	Mar. 07, 2023	Dec. 19, 2022	Mar. 28, 2022	Sep. 30, 2021	Jun. 30, 2021	Sep. 06, 2017	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	May 11, 2017
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					24,134							372,583				480,184	360,334
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)												33 months
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)					$ 12.44							$ 13.84				$ 9.3	$ 11.61
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)												404,171				231,600	519,003
Share-Based Payment Arrangement, Expense										$ 1,281,000	$ 1,083,000	$ 3,105,000	$ 2,712,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage												100.00%
Forecast [Member]
Share-Based Payment Arrangement, Expense														$ 6,300,000	$ 4,500,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)															25 months
Market Based Vesting TSR Units [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount										$ 4,000,000		$ 4,000,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)												27 months
Market Based Vesting TSR Units [Member] | Issued 2022 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking										200.00%		200.00%
Market Based Vesting TSR Units [Member] | Issued 2023 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking										150.00%		150.00%
Market Based Vesting TSR Units [Member] | Issued 2024 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking										0.00%		0.00%
Time-based Restricted Common Share Units [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount										$ 3,400,000		$ 3,400,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)												33 months
The 2018 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)																		3,433,831
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)										945,241		945,241				1,452,433
The 2018 Plan [Member] | Market Based Vesting TSR Units [Member] | Share-Based Payment Arrangement, Employee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		203,518		228,025		162,556		433,200
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)						3 years		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking			200.00%
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)		$ 15.12		$ 9.55		$ 13.74		$ 4.17
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Options to be Converted to Cash (in shares)								111,465
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)			210,400
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares)			420,800
The 2018 Plan [Member] | Market Based Vesting TSR Units [Member] | Share-Based Payment Arrangement, Employee [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking		0.00%		0.00%		0.00%		0.00%
The 2018 Plan [Member] | Market Based Vesting TSR Units [Member] | Share-Based Payment Arrangement, Employee [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking		200.00%		200.00%		200.00%		200.00%
The 2018 Plan [Member] | Time-based Restricted Common Share Units [Member] | Share-Based Payment Arrangement, Employee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		169,065		228,025		162,556	5,500	433,200
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				3 years			3 years	3 years
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)	$ 8.72	$ 12.29				$ 9.94	$ 9.06	$ 7.51
The 2008 Plan [Member] | Performance-based Restricted Common Share Units [Member] | Immediate Vesting Upon Change in Control [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)									965,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)										455,000		455,000