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INCOME TAXES - Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Current:
Federal	$ 0	$ (395)	$ (7)
State	291	256	588
Foreign	278	185	112
Total current tax provision	569	46	693
Deferred
Federal	0	59,837	1,506
State	0	6,664	(1,095)
Foreign	0	(253)	(1,230)
Total deferred tax provision (benefit)	0	66,248	(819)
Total income tax provision (benefit)	$ 569	$ 66,294	$ (126)

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