Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (227,451)	$ 33,651
Currency translation gain (loss)	1,564	(4,812)
Comprehensive (loss) income	(225,887)	28,839
Less: other comprehensive income (loss) attributable to noncontrolling interest	167	(1,375)
Less: net (loss) income attributable to noncontrolling interest	(1,095)	1,371
Total comprehensive (loss) income attributable to ADS	$ (224,959)	$ 28,843