Employee Benefit Plans

9 Months Ended

Oct. 31, 2011

Employee Benefit Plans [Abstract]

EMPLOYEE BENEFIT PLANS

12. EMPLOYEE BENEFIT PLANS

The Company maintains several pension and retirement plans, and also provides certain health-care and life insurance benefits.

Net periodic pension and other postretirement benefit expense included the following components:

	Three Months Ended October 31,
							Other
	Pension Benefits						Postretirement Benefits
(in thousands)	2011			2010			2011			2010
Net Periodic Benefit Cost:
Service cost	$	3,386		$	3,061		$	642		$	590
Interest cost		6,508			5,909			821			816
Expected return on plan assets		(4,339	)		(4,266	)		—			—
Amortization of prior service cost		265			270			(164	)		(164	)
Amortization of net loss		2,626			644			6			1
Net expense	$	8,446		$	5,618		$	1,305		$	1,243

	Nine Months Ended October 31,
							Other
	Pension Benefits						Postretirement Benefits
(in thousands)	2011			2010			2011			2010
Net Periodic Benefit Cost:
Service cost	$	10,568		$	9,604		$	1,649		$	1,284
Interest cost		18,989			17,904			2,326			2,208
Expected return on plan assets		(14,036	)		(13,176	)		—			—
Amortization of prior service cost		798			808			(494	)		(494	)
Amortization of net loss		5,353			2,164			12			1
Net expense	$	21,672		$	17,304		$	3,493		$	2,999