Note 14 - Incentive Share Plan (Details Textual) - USD ($) $ / shares in Units, $ in Millions																			12 Months Ended
	Jan. 01, 2024	Dec. 19, 2023	Mar. 07, 2023	Dec. 31, 2022	Dec. 19, 2022	Mar. 28, 2022	Dec. 31, 2021	Dec. 13, 2021	Sep. 30, 2021	Jul. 31, 2021	Jun. 30, 2021	Mar. 17, 2021	Jul. 31, 2020	Jan. 01, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 16, 2018	Sep. 06, 2017	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 11, 2017
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		24,134			35,222			29,825												480,184	360,334	904,215
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			$ 9.52			$ 9.32												$ 9.3	$ 11.61	$ 5.99
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)																				231,600	519,003	1,024,808
Share-Based Payment Arrangement, Expense																				$ 3.7	$ 1.5	$ 5.9
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (in shares)																				1,312,000	694,000	850,000
Forecast [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount																			$ 5.3
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)																			23 months
Time-based Restricted Common Share Units [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount																				$ 2.7
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)																				30 months
Market Based Vesting TSR Units [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount																				$ 2.6
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)																				24 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%
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%
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, Ending Balance (in shares)				1,220,945																1,452,433	1,220,945
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)			228,025			162,556			5,500		433,200		530,000			317,184
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			$ 9.94			$ 9.06		$ 7.51		$ 5.83		$ 11.69	$ 10.63
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking				0.00%																	0.00%
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)				0
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			3 years						3 years		3 years		3 years			3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)				273,500
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)			228,025			162,556					433,200		545,000		17,069	405,417
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)			$ 9.55			$ 13.74					$ 4.17		$ 5.55		$ 8.22
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking							0.00%															0.00%
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)							0
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)						3 years				3 years	3 years		3 years		3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)							385,648
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Options to be Converted to Cash (in shares)											111,465
The 2018 Plan [Member] | Market Based Vesting TSR Units [Member] | Share-Based Payment Arrangement, Employee [Member] | Subsequent Event [Member]
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, 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%		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] | 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)												2,490
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)												$ 10.04
The 2008 Plan [Member] | Performance-based Restricted Common Share Units [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)														495,956
The 2008 Plan [Member] | Performance-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)																	4,300
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)														247,978				965,000
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)																		$ 13.05
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)																				9 months
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)																				455,000
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements (in shares)																				0
The 2008 Plan [Member] | Performance-based Restricted Common Share Units [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Awarded Based on Ranking														200.00%
The 2008 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)																	387,499
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)																	3 years