Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	Treasury Stock [Member]	Key Executive Deferred Compensation [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Jun. 30, 2020	26,466	(180)
Balance at Jun. 30, 2020	$ 127,713	$ (1,121)	$ 1,121	$ (93)	$ (1,920)	$ 125,700
Net income	0	0	0	0	5,868	5,868
Other comprehensive income (loss)	$ 0	$ 0	0	142	0	142
Stock compensation awards (in shares)	43	0
Stock compensation awards	$ 315	$ 0	0	0	0	315
Restricted stock units issued (in shares)	28	0
Restricted stock units issued	$ 0	$ 0	0	0	0	0
Shares issued for deferred compensation (in shares)	193	0
Shares issued for deferred compensation	$ 1,534	$ 0	0	0	0	1,534
Activity of treasury shares, net (in shares)	0	(166)
Activity of treasury shares, net	$ 0	$ (1,329)	0	0	0	(1,329)
Deferred stock compensation	0	0	1,329	0	0	1,329
Stock-based compensation expense	$ 1,977	$ 0	0	0	0	1,977
Stock options exercised, net (in shares)	133	0
Stock options exercised, net	$ 987	$ 0	0	0	0	987
Dividends — $0.20 per share	$ 0	$ 0	0	0	(5,353)	(5,353)
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 (loss)	$ 0	$ 0	0	(4)	0	(4)
Stock compensation awards (in shares)	42	0
Stock compensation awards	$ 300	$ 0	0	0	0	300
Restricted stock units issued (in shares)	80	0
Restricted stock units issued	$ (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				4,833
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