Condensed Consolidated Statement of Shareowners' Equity (unaudited) Statement - USD ($) $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock
Balance at the beginning of the period at Jun. 30, 2021	$ 239,670	$ 9	$ 2,142	$ 5,298	$ 299,034	$ 1,980	$ (68,793)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(5,049)				(5,049)
Other comprehensive income (loss)	(123)					(123)
Issuance of non-restricted stock	(3)			(120)			117
Compensation expense related to stock compensation plans	1,122			1,122
Restricted stock units issuance	(176)			(568)			392
Relative total shareholder return performance units issuance	(32)			(104)			72
Repurchase of Common Stock	(1,523)						(1,523)
Dividends declared	(3,367)				(3,367)
Balance at the end of the period at Sep. 30, 2021	230,519	9	2,142	5,628	290,618	1,857	(69,735)
Balance at the beginning of the period at Jun. 30, 2022	213,536	8	2,143	6,304	269,833	3,766	(68,518)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	6,556				6,556
Other comprehensive income (loss)	531					531
Issuance of non-restricted stock	41			(189)			230
Compensation expense related to stock compensation plans	1,168			1,168
Repurchase of Common Stock	(1,065)						(1,065)
Dividends declared	(3,396)				(3,396)
Balance at the end of the period at Sep. 30, 2022	$ 217,371	$ 8	$ 2,143	$ 7,283	$ 272,993	$ 4,297	$ (69,353)