Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 1,991	$ 2,066	$ 5,069
Additions Resulting in Charges to Operations	826	695	6,961
Charges to Other Accounts	(464)	(346)	(7,580)
Deductions Due to Write-Offs	(770)	(424)	(2,384)
Balance at End of Year	1,583	1,991	2,066
Deferred tax asset valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	3,108	3,374	3,777
Additions Resulting in Charges to Operations	905	0	(338)
Charges to Other Accounts	0	0	(65)
Deductions Due to Write-Offs	(3,178)	(266)	0
Balance at End of Year	$ 835	$ 3,108	$ 3,374