Property, Plant and Equipment (Tables)

12 Months Ended

Mar. 31, 2011

Notes to Financial Statements [Abstract]

Property, Plant and Equipment

Property, plant and equipment consist of the following (amounts in thousands):

	March 31,
	2011		2010
Land	$	46,497	$	39,671
Building and building improvements		375,611		349,964
Machinery and equipment		1,306,367		1,190,548
Projects in process		101,202		84,254
		1,829,677		1,664,437
Less accumulated depreciation		1,289,164		1,171,398
	$	540,513	$	493,039