Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenues (including related party revenues of $0, $0 and $230, for the years ended June 30, 2020, 2019, and 2018, respectively)	$ 685,797	$ 720,845	$ 696,651
Direct operating expenses (including related party expenses of $145,425, $152,136 and $148,580, for the years ended June 30, 2020, 2019, and 2018, respectively)	282,837	300,274	291,082
Selling, general and administrative expenses (including related party expenses of $23,288, $25,725 and $22,240, for the years ended June 30, 2020, 2019, and 2018, respectively)	100,829	103,274	83,073
Depreciation and amortization	7,163	7,398	9,338
Operating income	294,968	309,899	313,158
Other income (expense):
Interest income	4,234	6,343	4,388
Interest expense	(36,324)	(47,589)	(43,312)
Debt refinancing expense	(2,764)	0	0
Other components of net periodic benefit cost	(1,030)	244	(1,710)
Nonoperating income, Total	(35,884)	(41,002)	(40,634)
Income from operations before income taxes	259,084	268,897	272,524
Income tax benefit (expense)	(73,863)	(82,715)	16,338
Net Income (Loss) Attributable to Parent	$ 185,221	$ 186,182	$ 288,862
Earnings per share:
Basic	$ 2.93	$ 2.48	$ 3.83
Diluted	$ 2.92	$ 2.46	$ 3.81
Weighted-average number of common shares outstanding:
Basic (in shares)	63,172	75,069	75,381
Diluted (in shares)	63,515	75,731	75,820