Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Notes to Financial Statements [Abstract]

Inventories

5.   Inventories

	June 30, 2012			December 31, 2011
	(in thousands)
Raw materials and supplies	$	129,874		$	119,550
Work in process		30,934			31,085
Finished products		87,327			89,334
Inventory reserves		(38,509	)		(35,211	)
	$	209,626		$	204,758