Benefit Plans Level 3 (Tables)

9 Months Ended

Dec. 31, 2011

Notes To Financial Statements [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

Components of the net periodic benefit cost for our defined benefit pension plans and other postretirement medical benefits plan were as follows:

	Defined Benefit Pension Plans												Other Postretirement Benefits Plan
	U.S. Qualified						International
Three Months Ended December 31,	2011			2010			2011			2010			2011			2010
Service cost	$	51		$	47		$	114		$	135		$	—		$	—
Interest cost	609			654			66			88			248			292
Expected return on plan assets	(821		)	(758		)	(67		)	(95		)	—			—
Recognized losses	267			267			—			—			106			97
Amortization of prior service cost	—			—			—			—			(816		)	(816		)
Net periodic benefit cost (income)	$	106		$	210		$	113		$	128		$	(462	)	$	(427	)

	Defined Benefit Pension Plans												Other Postretirement Benefits Plan
	U.S. Qualified						International
Nine Months Ended December 31,	2011			2010			2011			2010			2011			2010
Service cost	$	154		$	142		$	341		$	406		$	—		$	—
Interest cost	1,828			1,963			198			262			743			876
Expected return on plan assets	(2,463		)	(2,275		)	(201		)	(285		)	—			—
Recognized losses	799			801			—			—			319			291
Amortization of prior service cost	—			—			—			—			(2,447		)	(2,447		)
Net periodic benefit cost (income)	$	318		$	631		$	338		$	383		$	(1,385	)	$	(1,280	)