Condensed Consolidated Statements of Shareholders' Equity - 6 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Common shares Class A common shares	Common shares Class B-1 common shares	Common shares Class B-2 common shares	Additional Paid In Capital	Retained Earnings	Cumulative Other Comprehensive Income (Loss)	Cumulative Common Distributions	Total Shareholders' Equity	Noncontrolling Interest
Balance beginning at Sep. 30, 2017	$ 289,663	$ 15	$ 1	$ 15	$ 95,878	$ 86,836	$ 84	$ (33,298)	$ 149,531	$ 140,132
Increase (Decrease) in Shareholders' Equity
Share grants, net	2,339				2,339				2,339
Net income	178,966					79,476			79,476	99,490
Fees from services provided prior to the Up-C Transaction	(128)									(128)
Tax distributions to Member	(22,481)									(22,481)
Common share distributions	(15,581)							(8,081)	(8,081)	(7,500)
Other comprehensive loss	(2)						(1)		(1)	(1)
Balance ending at Mar. 31, 2018	$ 432,776	$ 15	$ 1	$ 15	$ 98,217	$ 166,312	$ 83	$ (41,379)	$ 223,264	$ 209,512