Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - 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	5,670	5,670
Other comprehensive income	$ 0	$ 0	0	93	0	93
Stock compensation awards (in shares)	35	0
Stock compensation awards	$ 242	$ 0	0	0	0	242
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)	141	0
Shares issued for deferred compensation	$ 1,096	$ 0	0	0	0	1,096
Activity of treasury shares, net (in shares)	0	(128)
Activity of treasury shares, net	$ 0	$ (990)	0	0	0	(990)
Deferred stock compensation	0	0	990	0	0	990
Stock compensation expense	$ 1,317	$ 0	0	0	0	1,317
Stock options exercised, net (in shares)	128	0
Stock options exercised, net	$ 962	$ 0	0	0	0	962
Dividends — $0.20 per share	$ 0	$ 0	0	0	(4,010)	(4,010)
Balance (in shares) at Mar. 31, 2021	26,798	(308)
Balance at Mar. 31, 2021	$ 131,330	$ (2,111)	2,111	0	(260)	131,070
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	9,856	9,856
Other comprehensive income	$ 0	$ 0	0	11	0	11
Stock compensation awards (in shares)	30	0
Stock compensation awards	$ 225	$ 0	0	0	0	225
Shares issued for deferred compensation (in shares)	412	0
Shares issued for deferred compensation	$ 3,089	$ 0	0	0	0	3,089
Activity of treasury shares, net (in shares)	0	(401)
Activity of treasury shares, net	$ 0	$ (3,007)	0	0	0	(3,007)
Deferred stock compensation	0	0	3,007	0	0	3,007
Stock compensation expense	$ 2,466	$ 0	0	0	0	2,466
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	(4,048)	(4,048)
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)
Balance (in shares) at Mar. 31, 2022	27,390	(747)
Balance at Mar. 31, 2022	$ 138,082	$ (5,457)	$ 5,457	$ 60	$ 4,403	$ 142,545