Note 4 - Revenue - Revenue By Geographical Location (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenues	$ 27,882	$ 29,675
FINLAND
Revenues	$ 12,950	$ 8,208
FINLAND | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	46.00%	28.00%
NEW ZEALAND
Revenues	$ 6,524	$ 7,725
NEW ZEALAND | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	23.00%	26.00%
NORWAY
Revenues	$ 3,653	$ 6,076
NORWAY | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	13.00%	20.00%
CANADA
Revenues	$ 3,780	$ 4,607
CANADA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	14.00%	16.00%
Other [Member]
Revenues	$ 975	$ 3,059
Other [Member] | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	3.00%	10.00%
Total [Member] | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	100.00%	100.00%