Condensed Consolidated Statements of Shareholders’ Equity - 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)	(20,068)				(20,068)
Other comprehensive income (loss)	1,525					1,525
Issuance of unrestricted stock	162			(235)			397
Conversion of Class A to Class B common stock	0
Compensation expense related to stock compensation plans	3,708			3,708
Restricted stock units issuance	(506)			(1,642)			1,136
Relative total shareholder return performance units issuance	(32)			(104)			72
Repurchase of Common Stock	(2,329)						(2,329)
Dividends declared	(10,130)				(10,130)
Balance at the end of the period at Mar. 31, 2022	212,000	9	2,142	7,025	268,836	3,505	(69,517)
Balance at the beginning of the period at Dec. 31, 2021	206,664	9	2,142	6,015	265,924	2,371	(69,797)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	6,295				6,295
Other comprehensive income (loss)	1,134					1,134
Issuance of unrestricted stock	165			7			158
Compensation expense related to stock compensation plans	1,153			1,153
Restricted stock units issuance	(28)			(150)			122
Dividends declared	(3,383)				(3,383)
Balance at the end of the period at Mar. 31, 2022	212,000	9	2,142	7,025	268,836	3,505	(69,517)
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)	(23,816)				(23,816)
Other comprehensive income (loss)	117					117
Issuance of unrestricted stock	41			(484)			525
Conversion of Class A to Class B common stock	0
Compensation expense related to stock compensation plans	3,703			3,703
Restricted stock units issuance	(162)			(634)			472
Repurchase of Common Stock	(3,787)						(3,787)
Dividends declared	(10,126)				(10,126)
Balance at the end of the period at Mar. 31, 2023	179,506	8	2,143	8,889	235,891	3,883	(71,308)
Balance at the beginning of the period at Dec. 31, 2022	177,201	8	2,143	7,805	233,556	4,277	(70,588)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,691				5,691
Other comprehensive income (loss)	(394)					(394)
Issuance of unrestricted stock	0			(110)			110
Compensation expense related to stock compensation plans	1,194			1,194
Repurchase of Common Stock	(830)						(830)
Dividends declared	(3,356)				(3,356)
Balance at the end of the period at Mar. 31, 2023	$ 179,506	$ 8	$ 2,143	$ 8,889	$ 235,891	$ 3,883	$ (71,308)