Employee Benefit Plans (Tables)

6 Months Ended

Sep. 30, 2014

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

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

	Postretirement Benefits
	Three Months Ended				Six Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Interest cost	$	5	$	8	$	11	$	15
Amortization of net (gain) loss		—		7		—		15
Net periodic cost	$	5	$	15	$	11	$	30

	Pension Plan
	Three Months Ended				Six Months Ended
	September 30, 2014		September 30, 2013		September 30, 2014		September 30, 2013
Interest cost	$	28	$	28	$	57	$	56
Amortization of net (gain) loss		3		—		5		—
Net periodic cost	$	31	$	28	$	62	$	56