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	AOCI Attributable to Parent	Treasury Stock
Shareowners’ Equity at Jun. 30, 2017	$ 176,204	$ 14	$ 2,137	$ 2,971	$ 230,763	$ 1,115	$ (60,796)
Net income	24,185				24,185
Other Comprehensive Income (Loss), Net of Tax	227					227
Issuance of non-restricted stock (11,000 shares in Q3'19, 10,000 shares in Q3'18, 32,000 shares YTD in FY'19, 29,000 shares YTD in FY'18)	2			(492)			494
Conversion of Class A to Class B common stock (0 shares in Q3'19, 13,000 shares in Q3'18, 7,000 shares YTD in FY'19, 14,000 shares YTD in FY'18)	0	(1)	1
Compensation expense related to stock incentive plans	3,326			3,326
Performance share issuance (0 shares in Q3'19, 0 shares in Q3'18, 81,000 shares YTD in FY19, 226,000 shares YTD in FY'18)	(2,102)			(2,261)	(4,463)		4,622
Relative total shareholder return performance units issuance (0 shares in Q3'19, 0 shares in Q3'18, 27,000 shares YTD in FY'19, 38,000 shares YTD in FY'18)	(326)			(1,283)			957
Repurchase of Common Stock (0 shares in Q3'19, 398,000 shares in Q3'18, 567,000 shares YTD in FY'19, 505,000 YTD in FY'18)	(8,420)						(8,420)
Dividends declared ($0.08 per share in Q3'19, $0.07 per share in Q3'18, $0.24 per share YTD in FY'19, $0.21 per share YTD in FY'18)	(7,894)				(7,894)
Shareowners’ Equity at Mar. 31, 2018	185,202	13	2,138	2,261	242,591	1,342	(63,143)
Shareowners’ Equity at Dec. 31, 2017	187,773	14	2,137	1,566	239,354	1,327	(56,625)
Net income	5,850				5,850
Other Comprehensive Income (Loss), Net of Tax	15					15
Issuance of non-restricted stock (11,000 shares in Q3'19, 10,000 shares in Q3'18, 32,000 shares YTD in FY'19, 29,000 shares YTD in FY'18)	1			(120)			121
Conversion of Class A to Class B common stock (0 shares in Q3'19, 13,000 shares in Q3'18, 7,000 shares YTD in FY'19, 14,000 shares YTD in FY'18)	0	(1)	1
Compensation expense related to stock incentive plans	815			815
Performance share issuance (0 shares in Q3'19, 0 shares in Q3'18, 81,000 shares YTD in FY19, 226,000 shares YTD in FY'18)	(1)				(1)
Repurchase of Common Stock (0 shares in Q3'19, 398,000 shares in Q3'18, 567,000 shares YTD in FY'19, 505,000 YTD in FY'18)	(6,639)						(6,639)
Dividends declared ($0.08 per share in Q3'19, $0.07 per share in Q3'18, $0.24 per share YTD in FY'19, $0.21 per share YTD in FY'18)	(2,612)				(2,612)
Shareowners’ Equity at Mar. 31, 2018	185,202	13	2,138	2,261	242,591	1,342	(63,143)
Shareowners’ Equity at Jun. 30, 2018	193,024	13	2,138	1,881	249,945	1,816	(62,769)
Net income	28,235				28,235
Other Comprehensive Income (Loss), Net of Tax	65					65
Issuance of non-restricted stock (11,000 shares in Q3'19, 10,000 shares in Q3'18, 32,000 shares YTD in FY'19, 29,000 shares YTD in FY'18)	(12)			(426)			414
Conversion of Class A to Class B common stock (0 shares in Q3'19, 13,000 shares in Q3'18, 7,000 shares YTD in FY'19, 14,000 shares YTD in FY'18)	0	0	0
Compensation expense related to stock incentive plans	4,749			4,749
Performance share issuance (0 shares in Q3'19, 0 shares in Q3'18, 81,000 shares YTD in FY19, 226,000 shares YTD in FY'18)	(652)			(1,709)			1,057
Restricted share units issuance (0 shares in Q3'19, 0 shares in Q3'18, 15,000 shares YTD in FY'19, 0 shares YTD in FY'18)	(181)			(382)			201
Relative total shareholder return performance units issuance (0 shares in Q3'19, 0 shares in Q3'18, 27,000 shares YTD in FY'19, 38,000 shares YTD in FY'18)	(173)			(523)			350
Repurchase of Common Stock (0 shares in Q3'19, 398,000 shares in Q3'18, 567,000 shares YTD in FY'19, 505,000 YTD in FY'18)	(9,132)						(9,132)
Dividends declared ($0.08 per share in Q3'19, $0.07 per share in Q3'18, $0.24 per share YTD in FY'19, $0.21 per share YTD in FY'18)	(8,926)				(8,926)
Shareowners’ Equity at Mar. 31, 2019	206,997	13	2,138	3,590	269,254	1,881	(69,879)
Shareowners’ Equity at Dec. 31, 2018	200,871	13	2,138	2,607	264,267	1,861	(70,015)
Net income	7,954				7,954
Other Comprehensive Income (Loss), Net of Tax	20					20
Issuance of non-restricted stock (11,000 shares in Q3'19, 10,000 shares in Q3'18, 32,000 shares YTD in FY'19, 29,000 shares YTD in FY'18)	0			(138)			138
Compensation expense related to stock incentive plans	1,121			1,121
Repurchase of Common Stock (0 shares in Q3'19, 398,000 shares in Q3'18, 567,000 shares YTD in FY'19, 505,000 YTD in FY'18)	(2)						(2)
Dividends declared ($0.08 per share in Q3'19, $0.07 per share in Q3'18, $0.24 per share YTD in FY'19, $0.21 per share YTD in FY'18)	(2,967)				(2,967)
Shareowners’ Equity at Mar. 31, 2019	$ 206,997	$ 13	$ 2,138	$ 3,590	$ 269,254	$ 1,881	$ (69,879)