Employee Benefits (Tables)

9 Months Ended

Dec. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Components of the Company's net periodic pension and other post-retirement benefit costs

The components of the Company’s net periodic pension and other post-retirement benefit costs are as follows:

	Pension Benefits
	For the Three Months Ended						For the Nine Months Ended
	December 31, 2012			December 31, 2011			December 31, 2012			December 31, 2011
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	603		$	618		$	1,776		$	1,847
Interest cost	7,423			8,182			22,112			24,509
Expected return on plan assets	(7,252		)	(7,727		)	(21,621		)	(23,139		)
Amortization of:
Prior service cost	15			21			46			64
Actuarial loss	504			168			1,508			503
Net periodic benefit cost	$	1,293		$	1,262		$	3,821		$	3,784

	Other Post-Retirement Benefits
	For the Three Months Ended						For the Nine Months Ended
	December 31, 2012			December 31, 2011			December 31, 2012			December 31, 2011
	(In thousands)
Components of net periodic benefit cost:
Service cost	$	175		$	126		$	522		$	381
Interest cost	262			278			782			837
Amortization of:
Prior service cost	(122		)	(122		)	(367		)	(367		)
Actuarial loss	161			123			481			371
Net periodic benefit cost	$	476		$	405		$	1,418		$	1,222