Income Taxes - Provision for (Benefit from) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Current:
Federal	$ 211	$ 15,576	$ 8,394
State	3,815	7,041	(1,787)
Foreign	(2,630)	20,268	6,736
Current Total	1,396	42,885	13,343
Deferred:
Federal	(4,923)	(146,780)	(173,184)
State	(8,491)	(127)	(13,244)
Foreign	(438)	(54)	(8,039)
Deferred Total	(13,852)	(146,961)	(194,467)
Total	$ (12,456)	$ (104,076)	$ (181,124)