Consolidated Statements of Changes in Stockholder's Equity - USD ($) $ in Thousands	Common Shares	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated (Losses) Earnings	Noncontrolling Interests	Total
Balance at Jun. 30, 2018	$ 654	$ 2,192,612	$ (1,201)	$ (89,898)	$ 39,102	$ 2,141,269
Balance (in shares) at Jun. 30, 2018	65,360,041
Increase (Decrease) in Stockholders' Equity
Stock-based compensation and related share issuances		472				472
Stock-based compensation and related share issuances (in shares)	34,857
Distributions from (to) non-controlling interests		1,950			(25)	1,925
Net income				15,008	(3,032)	11,976
Other comprehensive loss			$ 1,201	(1,201)
Dividends declared				(16,376)		(16,376)
Balance at Sep. 30, 2018	$ 654	2,195,034		(92,467)	36,045	2,139,266
Balance (in shares) at Sep. 30, 2018	65,394,898
Balance at Jun. 30, 2019	$ 655	2,201,773		(65,747)	33,772	2,170,453
Balance (in shares) at Jun. 30, 2019	65,440,492
Increase (Decrease) in Stockholders' Equity
Stock-based compensation and related share issuances		(323)				(323)
Stock-based compensation and related share issuances (in shares)	55,295
Distributions from (to) non-controlling interests		900			(192)	708
Net income				70,453	(1,581)	68,872
Dividends declared				(17,382)		(17,382)
Balance at Sep. 30, 2019	$ 655	$ 2,202,350		$ (12,676)	$ 31,999	$ 2,222,328
Balance (in shares) at Sep. 30, 2019	65,495,787