Property, Plant and Equipment (Tables)

3 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

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

	June 30, 2015		March 31, 2015
Land	$	55,624	$	55,624
Building and building improvements	437,751		434,403
Machinery and equipment	1,598,481		1,576,074
Projects in process	86,093		76,315
	2,177,949		2,142,416
Less accumulated depreciation and amortization	1,582,702		1,560,844
	$	595,247	$	581,572