Net Periodic Benefit Cost (Tables)

6 Months Ended

Sep. 30, 2013

Pension Plans, Defined Benefiit

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs

The following table sets forth the components of net periodic pension cost for the Company’s defined benefit pension plans (in thousands):

	Three months ended						Six months ended
	September 30, 2013			September 30, 2012			September 30, 2013			September 30, 2012
Service costs	$	629		$	613		$	1,253		$	1,226
Interest cost	2,418			2,469			4,827			4,938
Expected return on plan assets	(3,157		)	(2,803		)	(6,314		)	(5,606		)
Net amortization	1,582			1,497			3,159			2,995
Net periodic pension cost	$	1,472		$	1,776		$	2,925		$	3,553

Other Postretirement Benefit Plans, Defined Benefit

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs

The following table sets forth the components of net periodic postretirement benefit cost for the Company’s defined benefit postretirement plans (in thousands):

	Three months ended				Six months ended
	September 30, 2013		September 30, 2012		September 30, 2013		September 30, 2012
Interest cost	$	63	$	78	$	125	$	156
Amortization of plan net losses	22		36		43		72
Net periodic postretirement cost	$	85	$	114	$	168	$	228