Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Paid-In Capital [Member]	Common Stock in Treasury [Member]	Accumulated Other Comprehensive Loss [Member]	Retained (Deficit) Earnings [Member]	Retained (Deficit) Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Total ADS Stockholders' Equity [Member]	Total ADS Stockholders' Equity [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Non-controlling Interest in Subsidiaries [Member]
Beginning Balance, Value at Mar. 31, 2019	$ 398,313		$ 11,436	$ 391,039	$ (9,863)	$ (25,867)	$ 17,582		$ 384,327		$ 13,986
Beginning Balance, Shares at Mar. 31, 2019			57,964		474
Net loss (income)	(227,451)						(226,356)		(226,356)		(1,095)
Other comprehensive (income) loss	1,564					1,397			1,397		167
Redeemable convertible preferred stock dividends	(6,846)						(6,846)		(6,846)
Common stock dividends	(63,107)						(63,107)		(63,107)
Allocation of ESOP shares to participants for compensation	2,490			2,490					2,490
'ESOP special dividend compensation	101,189			101,189					101,189
Exercise of common stock options	1,461		$ 1	1,667	$ (207)				1,461
Exercise of common stock options, Shares			114		7
Restricted stock awards	(92)				$ (92)				(92)
Restricted stock awards, Shares			31		3
Stock-based compensation expense	1,841			1,841					1,841
ESOP distribution in common stock	2,822		$ 2	2,820					2,822
ESOP distribution in common stock, Shares			174
Ending Balance, Value at Jun. 30, 2019	212,184		$ 11,439	501,046	$ (10,162)	(24,470)	(278,727)		199,126		13,058
Ending Balance, Shares at Jun. 30, 2019			58,283		484
Beginning Balance, Value at Mar. 31, 2020	$ 537,485	$ (779)	$ 11,555	827,573	$ (10,461)	(35,325)	(267,619)	$ (779)	525,723	$ (779)	11,762
Beginning Balance, Shares at Mar. 31, 2020			69,810		491
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Net loss (income)	$ 70,668						70,466		70,466		202
Other comprehensive (income) loss	3,150					2,831			2,831		319
Redeemable convertible preferred stock dividends	(1,366)						(1,366)		(1,366)
Common stock dividends	(6,371)						(6,371)		(6,371)
Allocation of ESOP shares to participants for compensation	4,036			4,036					4,036
Exercise of common stock options	2,240		$ 1	2,239					2,240
Exercise of common stock options, Shares			93
Restricted stock awards	(391)		$ 1		$ (392)				(391)
Restricted stock awards, Shares			70		9
Stock-based compensation expense	5,599			5,599					5,599
Other	318			318					318
Ending Balance, Value at Jun. 30, 2020	$ 614,589		$ 11,557	$ 839,765	$ (10,853)	$ (32,494)	$ (205,669)		$ 602,306		$ 12,283
Ending Balance, Shares at Jun. 30, 2020			69,973		500