Employee Benefit Plans (Tables)

3 Months Ended

Jun. 30, 2013

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				Pension Plan
	Three Months Ended				Three Months Ended
	June 30, 2013		June 30, 2012		June 30, 2013		June 30, 2012
Interest cost	$	7	$	8	$	28	$	35
Amortization of net loss		8		2		—		—
Net periodic cost	$	15	$	10	$	28	$	35