Contingencies and Legacy Environmental Commitments (Tables)

9 Months Ended

Dec. 31, 2013

Schedule of Environmental Activity

The environmental activity is summarized as follows:

Balance at March 31, 2013	$	12,684
Environmental costs incurred		(1,039	)
Interest accretion		256
Reduction of environmental reserve-Wyoming Illinois		(1,207	)
Balance at December 31, 2013	$	10,694