Property, Plant and Equipment Level 3 (Tables)

6 Months Ended

Sep. 30, 2012

Notes To Financial Statements [Abstract]

Property, Plant and Equipment [Table Text Block]

Information related to the major categories of our depreciable assets is as follows:

	September 30, 2012			March 31, 2012
Land and land improvements (1)	$	35,032		$	33,099
Buildings and leasehold improvements	236,734			230,823
Machinery and equipment	306,858			301,665
Information systems	107,625			110,130
Radioisotope	226,616			210,899
Construction in progress (1)	41,904			22,811
Total property, plant, and equipment	954,769			909,427
Less: accumulated depreciation and depletion	(541,006		)	(523,018		)
Property, plant, and equipment, net	$	413,763		$	386,409

(1) Land is not depreciated. Construction in progress is not depreciated until placed in service.