Note 14 Computation of Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
Net Income	$ 3,383	$ 2,357	$ 5,362	$ 8,364
Weighted Average Shares - Basic	31,127	31,310	31,037	31,331
Weighted Average Shares - Diluted	31,849	31,975	31,737	32,192
Net Income Per Share - Basic	$ 0.11	$ 0.08	$ 0.17	$ 0.27
Net Income Per Share - Diluted	$ 0.11	$ 0.07	$ 0.17	$ 0.26