Note 13 Computation of Earnings Per Share (Tables)

6 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended				Six Months Ended
		September 30,				September 30,
	2012		2011		2012		2011
	(unaudited)				(unaudited)
Net income	$	2,357	$	10,947	$	8,364	$	20,923
Weighted average shares - basic		31,310		31,383		31,331		31,445
Weighted average shares - diluted		31,975		32,545		32,192		32,669
Net income per share - basic	$	0.08	$	0.35	$	0.27	$	0.67
Net income per share - diluted	$	0.07	$	0.34	$	0.26	$	0.64