Revenue Recognition - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of period	$ (7,242)	$ (7,324)	$ (13,381)	$ (7,055)
Additions	(5)	(1,774)	0	(2,136)
Write-offs	0	(15)	6,134	78
Balance at end of period	(7,247)	(9,113)	(7,247)	(9,113)
Trade receivables	187,651	277,860	187,651	277,860
Trade receivables, net	$ 180,404	$ 268,747	$ 180,404	$ 268,747