Note 10 - Restructuring (Details Textual)	12 Months Ended
Mar. 31, 2016
Restructuring and Related Cost, Number of Positions Eliminated	11

The number of positions eliminated during the period as a result of restructuring activities.

No definition available.

Name:	us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration