Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Common Stock Including Additional Paid in Capital [Member]	Treasury Stock, Common [Member]	Key Executive Deferred Compensation [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares)	26,863		(346)
Balance (in shares) at Jun. 30, 2021	26,863		(346)
Balance at Jun. 30, 2021		$ 132,526	$ (2,450)	$ 2,450	$ 49	$ (1,405)	$ 131,170
Net Income		0	0	0	0	15,032	15,032
Other comprehensive income		0	$ 0	0	(4)	0
Board stock compensation (in shares)	42		0
Board stock compensation		300	$ 0	0	0	0	300
Restricted stock units issued, net of shares withheld for tax withholdings (in shares)	80		0
Restricted stock units issued, net of shares withheld for tax withholdings		(250)	$ 0	0	0	0	(250)
Shares issued for deferred compensation (in shares)	494		0
Shares issued for deferred compensation		3,610	$ 0	0	0	0	3,610
Activity of treasury shares, net (in shares)	0		(476)
Activity of treasury shares, net		0	$ (3,477)	0	0	0	(3,477)
Deferred stock compensation		0	0	3,477	0	0	3,477
Stock-based compensation expense		3,288	$ 0	0	0	0	3,288
Stock options exercised, net (in shares)	5		0
Stock options exercised, net		26	$ 0	0	0	0	26
Dividends — $0.20 per share		0	$ 0	0	0	(5,403)	(5,403)
Balance (in shares) at Jun. 30, 2022	27,484		(822)
Balance at Jun. 30, 2022		139,500	$ (5,927)	5,927	45	8,224	147,769
Balance (in shares)	27,484		(822)
Net Income		0	$ 0	0	0		25,762
Other comprehensive income		0	$ 0	0	294
Board stock compensation (in shares)	44		0
Board stock compensation		368	$ 0	0	0	0	368
Restricted stock units issued, net of shares withheld for tax withholdings (in shares)	301		0
Restricted stock units issued, net of shares withheld for tax withholdings		(896)	$ 0	0	0	0	(896)
Shares issued for deferred compensation		2,017	$ 0	0	0	0	2,017
Activity of treasury shares, net (in shares)	0		(100)
Activity of treasury shares, net			$ (1,239)	0	0	0	(1,239)
Deferred stock compensation		0	0	1,239	0	0	1,239
Stock-based compensation expense		3,698	$ 0	0	0	0	$ 3,698
Stock options exercised, net (in shares)	438		0				520,566
Stock options exercised, net		3,862	$ 0	0	0	0	$ 3,862
Dividends — $0.20 per share			$ 0	0	0	(5,438)	(5,438)
ESPP stock awards (in shares)	14		0
ESPP stock awards		142	$ 0	0	0	0	142
Balance (in shares) at Jun. 30, 2023	28,488		(922)
Balance at Jun. 30, 2023		$ 148,691	$ (7,166)	$ 7,166	$ 339	$ 28,548	$ 177,578
Balance (in shares)	28,488		(922)