SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 2,066	$ 5,069	$ 173
Additions Resulting in Charges to Operations	695	6,961	1,824
Charges to Other Accounts	(346)	(7,580)	3,221
Deductions Due to Write-Offs	(424)	(2,384)	(149)
Balance at End of Year	1,991	2,066	5,069
Deferred tax asset valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	3,374	3,777	3,906
Additions Resulting in Charges to Operations	0	(338)	99
Charges to Other Accounts	0	(65)	0
Deductions Due to Write-Offs	(266)	0	(228)
Balance at End of Year	$ 3,108	$ 3,374	$ 3,777