Note 9 - 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, 2020	Jun. 30, 2019	Mar. 31, 2019	Mar. 31, 2018
Granted, number of units (in shares)		600,396	46,168	524,997	396,536
Weighted Average Grant Date Fair Value (in dollars per share)	[1]	$ 0.90	$ 1.08	$ 1.14	$ 4.77
Grant Date Total Fair Value		$ 540	$ 50	$ 598	$ 1,891

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