Benefit Plans Schedule of Net Benefit Costs (Tables)

3 Months Ended

Nov. 30, 2013

Schedule of Net Periodic Benefit Costs [Abstract]

Schedule of Net Benefit Costs of Assumptions Used [Table Text Block]

	Qualified Pension Benefits						Non-Qualified Pension Benefits				Other Benefits
	2013			2012			2013		2012		2013			2012
	(Dollars in thousands)
Components of net periodic benefit costs for the three months ended November 30, 2013 and 2012 is as follows:
Service cost	$	7,467		$	7,216		$	179	$	165	$	482		$	633
Interest cost	6,698			6,505			336		323		519			616
Expected return on assets	(12,734		)	(11,956		)
Prior service cost (credit) amortization	399			399			57		57		(30		)	(4		)
Actuarial loss amortization	4,644			5,231			227		211					223
Transition amount amortization											124			175
Net periodic benefit cost	$	6,474		$	7,395		$	799	$	756	$	1,095		$	1,643