Employee Benefit Plans

6 Months Ended

Jul. 31, 2012

Employee Benefit Plans [Abstract]

EMPLOYEE BENEFIT PLANS

13. 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 July 31,
	Pension Benefits						Other Postretirement Benefits
(in thousands)	2012			2011			2012			2011
Net Periodic Benefit Cost:
Service cost	$	4,622		$	3,592		$	489		$	504
Interest cost		6,811			6,274			624			753
Expected return on plan assets		(5,322	)		(4,849	)		—			—
Amortization of prior service cost		254			267			(165	)		(165	)
Amortization of net loss		3,988			1,266			(81	)		3
Net expense	$	10,353		$	6,550		$	867		$	1,095

	Six Months Ended July 31,
	Pension Benefits						Other Postretirement Benefits
(in thousands)	2012			2011			2012			2011
Net Periodic Benefit Cost:
Service cost	$	9,038		$	7,182		$	1,191		$	1,007
Interest cost		13,398			12,481			1,420			1,505
Expected return on plan assets		(10,208	)		(9,697	)		—			—
Amortization of prior service cost		508			533			(330	)		(330	)
Amortization of net loss		7,978			2,580			15			6
Net expense	$	20,714		$	13,079		$	2,296		$	2,188