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)	(26,363)				(26,363)
Other comprehensive income (loss)	391					391
Issuance of unrestricted stock	(3)			(242)			239
Conversion of Class A to Class B common stock	0	0	0
Compensation expense related to stock compensation plans	2,555			2,555
Restricted stock units issuance	(478)			(1,492)			1,014
Relative total shareholder return performance units issuance	(32)			(104)			72
Repurchase of Common Stock	(2,329)						(2,329)
Dividends declared	(6,747)				(6,747)
Balance at the end of the period at Dec. 31, 2021	206,664	9	2,142	6,015	265,924	2,371	(69,797)
Balance at the beginning of the period at Sep. 30, 2021	230,519	9	2,142	5,628	290,618	1,857	(69,735)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(21,314)				(21,314)
Other comprehensive income (loss)	514					514
Issuance of unrestricted stock	0			(122)			122
Conversion of Class A to Class B common stock	0	0	0
Compensation expense related to stock compensation plans	1,433			1,433
Restricted stock units issuance	(302)			(924)			622
Repurchase of Common Stock	(806)						(806)
Dividends declared	(3,380)				(3,380)
Balance at the end of the period at Dec. 31, 2021	206,664	9	2,142	6,015	265,924	2,371	(69,797)
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)	(29,507)				(29,507)
Other comprehensive income (loss)	511					511
Issuance of unrestricted stock	41			(374)			415
Conversion of Class A to Class B common stock	0	0	0
Compensation expense related to stock compensation plans	2,509			2,509
Restricted stock units issuance	(162)			(634)			472
Repurchase of Common Stock	(2,957)						(2,957)
Dividends declared	(6,770)				(6,770)
Balance at the end of the period at Dec. 31, 2022	177,201	8	2,143	7,805	233,556	4,277	(70,588)
Balance at the beginning of the period at Sep. 30, 2022	217,371	8	2,143	7,283	272,993	4,297	(69,353)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(36,063)				(36,063)
Other comprehensive income (loss)	(20)					(20)
Issuance of unrestricted stock	0			(185)			185
Conversion of Class A to Class B common stock	0	0	0
Compensation expense related to stock compensation plans	1,341			1,341
Restricted stock units issuance	(162)			(634)			472
Repurchase of Common Stock	(1,892)						(1,892)
Dividends declared	(3,374)				(3,374)
Balance at the end of the period at Dec. 31, 2022	$ 177,201	$ 8	$ 2,143	$ 7,805	$ 233,556	$ 4,277	$ (70,588)