Note 4 - Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

(In thousands)	2014			2013
Land	$	11,736		$	10,085
Buildings and improvements		98,492			86,660
Machinery and equipment		188,987			179,685
Computer hardware and software		27,431			25,360
Furnitures and fixtures		5,466			4,829
Construction in progress		40,628			12,667
		372,740			319,286
Less accumulated depreciation		(146,860	)		(137,702	)
		225,880			181,584
Composite mats (rental fleet)		90,321			60,332
Less accumulated depreciation-mats		(32,840	)		(24,906	)
		57,481			35,426
Property, plant and equipment, net	$	283,361		$	217,010