Note 6 - Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	September 30,		December 31,
	2017		2016
	(In thousands)
Land	$	1,316	$	1,316
Buildings and improvements		38,241		37,356
Machinery and equipment		190,949		186,863
Vehicles		1,830		1,830
Nondepreciable machinery and equipment (parts and spares)		12,397		11,976
Construction-in-process		124,314		81,101
	$	369,047	$	320,442