Note 3 - Property, Plant and Equipment (Details) - Property, plant and equipment consist of the following: (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Property, plant and equipment consist of the following: [Abstract]
Land	$ 14,511	$ 14,435
Buildings and improvements	74,178	70,214
Machinery and equipment	270,641	256,977
Furniture, fixtures & computer equipment	8,333	7,753
Spare parts	1,098	1,160
Construction-in-progress	3,227	10,366
	371,988	360,905
Less: accumulated depreciation	(162,367)	(145,255)
	$ 209,621	$ 215,650