Note 3 - Concentration of Credit Risk, Other Concentration Risks and Significant Customers (Details)	3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended		9 Months Ended	6 Months Ended	3 Months Ended			6 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013 Customer 1 [Member] Accounts Receivable [Member]	Dec. 31, 2012 Customer 1 [Member] Accounts Receivable [Member]	Dec. 31, 2012 Customer 1 [Member] Sales Revenue, Net [Member]	Dec. 31, 2013 Customer 1 [Member] Sales Revenue, Net [Member]	Dec. 31, 2012 Customer 1 [Member] Sales Revenue, Net [Member]	Dec. 31, 2012 Customer 1 [Member]	Dec. 31, 2013 Customer 2 [Member] Accounts Receivable [Member]	Dec. 31, 2012 Customer 2 [Member] Accounts Receivable [Member]	Dec. 31, 2012 Customer 2 [Member] Accounts Receivable [Member]	Dec. 31, 2013 Customer 2 [Member] Sales Revenue, Net [Member]	Dec. 31, 2012 Customer 2 [Member]	Dec. 31, 2013 Sales Outside North America As Percent of Net Revenues [Member]	Dec. 31, 2012 Sales Outside North America As Percent of Net Revenues [Member]	Dec. 31, 2013 Sales Outside North America As Percent of Net Revenues [Member]	Dec. 31, 2012 Sales Outside North America As Percent of Net Revenues [Member]
Note 3 - Concentration of Credit Risk, Other Concentration Risks and Significant Customers (Details) [Line Items]
Concentration Risk, Percentage			10.10%	10.10%	17.80%	15.00%	9.80%	15.10%	17.00%	17.00%	21.90%	9.50%	10.50%	41.20%	52.30%	40.30%	44.30%
Number Of Major Customers, Concentration Risk	2	1			1							2