Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jan. 31, 2013

PENSION AND OTHER POSTRETIREMENT BENEFITS [Abstract]

Schedule of Net Benefit Costs

The components of net periodic pension and postretirement health benefit costs were as follows:

	PENSION PLAN (in thousands)
	For the Three Months Ended January 31,						For the Six Months Ended January 31,
	2013			2012			2013			2012
Service cost	$	417		$	303		$	876		$	662
Interest cost	384			405			772			808
Expected return on plan assets	(373		)	(369		)	(755		)	(740		)
Amortization of:
Prior service costs	4			4			7			7
Other actuarial loss	220			82			442			159
Net periodic benefit cost	$	652		$	425		$	1,342		$	896
	POSTRETIREMENT HEALTH PLAN               (in thousands)
	For the Three Months Ended January 31,						For the Six Months Ended January 31,
	2013			2012			2013			2012
Service cost	$	34		$	26		$	68		$	52
Interest cost	24			26			48			52
Amortization of:
Net transition obligation	4			4			8			8
Other actuarial loss	13			7			26			15
Net periodic benefit cost	$	75		$	63		$	150		$	127

Schedule of Assumptions Used

Assumptions used in the previous calculations were as follows:

	PENSION PLAN				POSTRETIREMENT HEALTH BENEFITS
	For the Three and Six Months Ended January 31,
	2013		2012		2013		2012
Discount rate for net periodic benefit cost	3.75	%	5.25	%	3.75	%	5.25	%
Rate of increase in compensation levels	3.50	%	4.00	%	—		—
Long-term expected rate of return on assets	7.50	%	7.50	%	—		—