Note 10 - Long-term Incentive Plan - Information on Outstanding Grants Made to Employees Under the LTIP (Details) - Long-Term Incentive Plan [Member] - Phantom Share Units (PSUs) [Member] - Employees [Member] - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Oct. 31, 2020	Mar. 31, 2020
Granted, number of units (in shares)		558,411	530,435	16,339	600,396
Weighted Average Grant Date Fair Value (in dollars per share)	[1]	$ 3.25	$ 2.71	$ 1.53	$ 0.90
Grant Date Total Fair Value		$ 1,815	$ 1,437	$ 25	$ 540

[1] Fair value is the closing market price on the grant date of the awards.