Note 1 - Summary of Accounting Policies - Weighted Average Number of Shares (Details) - shares shares in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Basic – Average Shares Outstanding (in shares)	12,324	12,574	12,698
Effect of Dilutive Securities – Stock Options and Restricted Stock Awards (in shares)	63	59	90
Diluted – Average Shares Outstanding (in shares)	12,387	12,633	12,788