Employee Benefit Plans (Tables)

9 Months Ended

Dec. 31, 2012

Components of Net Periodic Benefit Cost

The following tables provide the components of the net periodic benefit cost.

	Postretirement Benefits
	Three Months Ended				Nine Months Ended
	December 31, 2012		December 31, 2011		December 31, 2012		December 31, 2011
Interest cost	$	8	$	9	$	25	$	28
Amortization of net (gain) loss		1		4		5		11
Net periodic cost	$	9	$	13	$	30	$	39

	Pension Plan
	Three Months Ended				Nine Months Ended
	December 31, 2012		December 31, 2011		December 31, 2012		December 31, 2011
Interest cost	$	36	$	40	$	105	$	125
Amortization of net (gain) loss		—		—		—		—
Net periodic cost	$	36	$	40	$	105	$	125