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Net Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Numerator:    
Net loss available to common stockholders $ (528) $ (472)
Denominator:    
Common shares 89,434 88,233
Denominator for basic calculation 89,434 88,233
Employee stock options 0 0
Stock purchase rights 0 0
Denominator for diluted calculation 89,434 88,233
Net loss per share:    
Basic $ (0.01) $ (0.01)
Diluted $ (0.01) $ (0.01)