Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2018
Income Taxes [Abstract]
Income tax (benefit) expense	$ (1,035,000)	$ 6,994,000	$ (1,301,000)	$ 15,026,000
Effective income tax rate	25.00%	156.60%	20.40%	58.00%
Corporate tax rate			21.00%	35.00%
Non-cash tax charge for deferred income taxes	$ 102,000		$ 2,709,000
One time income tax expenses					$ 530,000
Provisional transition tax	$ 50,000