SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 5,069	$ 173	$ 313
Additions Resulting in Charges to Operations	6,961	1,824	(140)
Charges to Other Accounts	(7,580)	3,221	0
Deductions Due to Write-Offs	(2,384)	(149)	0
Balance at End of Year	2,066	5,069	173
Deferred tax asset valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	3,777	3,906	4,941
Additions Resulting in Charges to Operations	(338)	99	152
Charges to Other Accounts	(65)	0	0
Deductions Due to Write-Offs	0	(228)	(1,187)
Balance at End of Year	$ 3,374	$ 3,777	$ 3,906