Note 6 - Segment Information (Detail) - Major Customers	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
A [Member]
Major Customer	18.00%	21.00%	16.00%	18.00%
B [Member]
Major Customer	17.00%	10.00%	15.00%