Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Effective Income Tax Rate Reconciliation, Amount
Income tax benefit at Bermuda statutory rate	$ 0	$ 0
Foreign rate differential	0	(7,592)
Valuation allowance	0	7,378
Other	0	140
Total income tax benefit	$ 0	$ (74)
Effective Income Tax Rate Reconciliation, Percent
Income tax benefit at Bermuda statutory rate	0.00%	0.00%
Foreign rate differential	0.00%	9.09%
Valuation allowance	0.00%	(8.83%)
Other	0.00%	(0.17%)
Total income tax benefit	0.00%	0.09%	0.00%