Note 10 Pension Plans (Tables)

6 Months Ended

Sep. 30, 2012

Pension and Other Postretirement Benefits Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended				Six Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
	(unaudited)				(unaudited)
Service cost	$	25	$	21	$	49	$	42
Interest cost on projected benefit obligation		468		515		939		1,037
Expected return on plan assets		(379)		(432)		(758)		(869)
Recognized actuarial loss		42		19		84		38
Net periodic pension expense	$	156	$	123	$	314	$	248