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Note 8 - Segment Information (Details) - Reportable Segment Adjustments (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Reportable Segment Adjustments [Abstract]    
Intercompany eliminations $ (1,672) $ (1,154)
Investment in subsidiaries (686) (686)
Total adjustments $ (2,358) $ (1,840)