Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Mar. 31, 2017	$ 75	$ 1,114,771	$ (26,294)	$ (312)	$ 1,088,240
Balance, shares at Mar. 31, 2017	75,478,369
Equity compensation expense		24,700			24,700
Repurchase of the Company's common stock, net of taxes		(171)			(171)
Repurchase of the Company's common stock, net of taxes, shares	(8,974)
Issuance of the Company's common stock upon initial public offering, shares	279,723
Net income (loss)			60,955		60,955
Foreign currency translation adjustment				1,242	1,242
Changes in fair value of interest rate swap, net of taxes				1,606	1,606
Balance at Mar. 31, 2018	$ 75	1,139,300	34,661	2,536	1,176,572
Balance, shares at Mar. 31, 2018	75,749,118
Equity compensation expense		20,135			20,135
Repurchase of the Company's common stock, net of taxes		(5,926)			(5,926)
Repurchase of the Company's common stock, net of taxes, shares	(342,418)
Issuance of the Company's common stock upon initial public offering, shares	67,953
Net income (loss)			(52,012)		(52,012)
Foreign currency translation adjustment				(2,833)	(2,833)
Changes in fair value of interest rate swap, net of taxes				(3,449)	(3,449)
Balance at Mar. 31, 2019	$ 75	1,153,509	(17,841)	(3,256)	1,132,487
Balance, shares at Mar. 31, 2019	75,474,654
Cumulative effect of accounting change by the Joint Venture | ASU 2017-12 [Member]			(490)	490
Equity compensation expense		30,372			30,372
Issuance of the Company's common stock upon initial public offering	$ 49	608,630			608,679
Issuance of the Company's common stock upon initial public offering, shares	49,285,713
Effect of initial public offering issuance costs on Joint Venture equity		(4,160)			(4,160)
Issuance of tangible equity units		232,929			232,929
Unrealized gain (loss) on available for sale debt securities of the Joint Venture				1,045	1,045
Realized gain (loss) on available for sale debt securities of the Joint Venture				(1,045)	(1,045)
Issuance of the Company's common stock upon exercise of equity awards	$ 1	6,023			6,024
Issuance of the Company's common stock upon exercise of equity awards, shares	708,962
Net income (loss)			(947,597)		(947,597)
Foreign currency translation adjustment				(5,519)	(5,519)
Changes in fair value of interest rate swap, net of taxes				981	981
Issuance of the Company's common stock upon Merger	$ 176	2,194,484			2,194,660
Issuance of the Company's common stock upon Merger, shares	175,995,192
Conversion of tangible equity units	$ 2	(2)
Conversion of tangible equity units, shares	1,963,621
Other		795			795
Balance at Mar. 31, 2020	$ 303	$ 4,222,580	(930,064)	(7,372)	3,285,447
Balance, shares at Mar. 31, 2020	303,428,142
Cumulative effect of accounting change by the Joint Venture | ASC 606 [Member]			35,796		$ 35,796
Cumulative effect of accounting change by the Joint Venture | ASU 2018-02 [Member]			$ (422)	$ 422