Note 4 - Earnings Per Common Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net income		$ 2,208	$ 1,743	$ 4,198	$ 6,218
Weighted average shares outstanding during the period, net of treasury shares (in shares)		26,367	26,101	26,343	26,063
Weighted average vested restricted stock units outstanding (in shares)		252	140	222	163
Weighted average shares outstanding (in shares)		26,639	26,280	26,580	26,257
Basic income per share (in dollars per share)		$ 0.08	$ 0.07	$ 0.16	$ 0.24
Basic (in shares)		26,639	26,280	26,580	26,257
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)	[1]	721	254	581	107
Weighted average shares outstanding (in shares)		27,360	26,534	27,161	26,364
Diluted income per share (in dollars per share)		$ 0.08	$ 0.07	$ 0.15	$ 0.24
Anti-dilutive securities (b) (in shares)	[2]	1,062	1,904	1,101	2,506
Restricted Stock Units (RSUs) [Member]
Weighted average vested restricted stock units outstanding (in shares)		20	39	15	31

[1] Calculated using the "Treasury Stock" method as if dilutive securities were exercised and the funds were used to purchase common shares at the average market price during the period.

[2] Anti-dilutive securities were excluded from the computation of diluted net income per share for the three and six months ended December 31, 2020 and December 31, 2019 because the exercise price was greater than the average fair market price of the common shares or because the assumed proceeds from the award's exercise or vesting was greater than the average fair market price of the common shares.