Note 13 Computation of Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Net Income	$ 1,189	$ 5,671	$ 9,553	$ 26,594
Weighted Average Shares - Basic	31,005	31,203	31,222	31,335
Weighted Average Shares - Diluted	31,487	32,238	31,917	32,505
Net Income Per Share - Basic	$ 0.04	$ 0.18	$ 0.31	$ 0.85
Net Income Per Share - Diluted	$ 0.04	$ 0.18	$ 0.30	$ 0.82