Note 7 - Earnings Per Share - Shares Used in the Earnings Per Share Computations (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Basic (in shares)	37,308	37,189	37,294	37,179
Dilutive effect of stock options and restricted stock units (in shares)	170	112	181	130
Weighted average common shares outstanding-diluted (in shares)	37,478	37,301	37,475	37,309