Note 14 - Segment Reporting (Details Textual) - Heavy Fabrications [Member]	9 Months Ended
	Sep. 30, 2020
Number of Facilities	2
Number of Tower Sections in Production Capacity of Turbines Total	1,650
Maximum [Member]
Annual Tower Production Capacity	550
Minimum [Member]
Power Generating Capacity of Turbines	1,100