Employee Benefit Plans (Tables)

9 Months Ended

Dec. 31, 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				Nine Months Ended
	December 31, 2014		December 31, 2013		December 31, 2014		December 31, 2013
Interest cost	$	6	$	7	$	17	$	22
Amortization of net (gain) loss		—		8		—		23
Net periodic cost	$	6	$	15	$	17	$	45

	Pension Plan
	Three Months Ended				Nine Months Ended
	December 31, 2014		December 31, 2013		December 31, 2014		December 31, 2013
Interest cost	$	27	$	29	$	84	$	85
Amortization of net (gain) loss		2		—		7		—
Net periodic cost	$	29	$	29	$	91	$	85