Contingencies and Legacy Environmental Commitments (Tables)

6 Months Ended

Sep. 30, 2015

Commitments And Contingencies Disclosure [Abstract]

Schedule of Environmental Activity

The environmental activity is summarized as follows:

Balance at March 31, 2015	$	9,255
Environmental costs incurred		(307	)
Interest accretion		138
Reduction of environmental reserve-Placerita, California		(430)
Change in estimate for pre-existing sites		430
Balance at September 30, 2015	$	9,086