Condensed Consolidated Statement of Shareowners' Equity (unaudited) Statement - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income	Treasury Stock
Balance at the beginning of the period at Jun. 30, 2020	$ 244,796	$ 134	$ 10	$ 2,141	$ 3,770	$ 305,024	$ 134	$ 2,137	$ (68,286)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	19					19
Other comprehensive income (loss)	75							75
Issuance of unrestricted shares	(24)				(511)				487
Conversion of Class A to Class B common stock	0		(1)	1
Compensation expense related to stock compensation plans	4,048				4,048
Restricted stock units issuance	(80)				(284)				204
Relative total shareholder return performance units issuance	(156)				(586)				430
Repurchase of Common Stock	(2,192)								(2,192)
Dividends declared	(10,161)					(10,161)
Balance at the end of the period at Mar. 31, 2021	236,459		9	2,142	6,437	295,016		2,212	(69,357)
Balance at the beginning of the period at Dec. 31, 2020	244,012		9	2,142	4,843	302,937		2,169	(68,088)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(4,529)					(4,529)
Other comprehensive income (loss)	43							43
Issuance of unrestricted shares	(24)				(196)				172
Conversion of Class A to Class B common stock	0		0	0
Compensation expense related to stock compensation plans	1,790				1,790
Repurchase of Common Stock	(1,441)								(1,441)
Dividends declared	(3,392)					(3,392)
Balance at the end of the period at Mar. 31, 2021	236,459		9	2,142	6,437	295,016		2,212	(69,357)
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 shares	162				(235)				397
Conversion of Class A to Class B common stock	0		0	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 shares	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)