Restatement of Previously Issued Financial Statements - Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2017	Nov. 30, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income	$ (166)	$ 16,646	$ 21,682	$ 48,994
Comprehensive Income	$ (1,632)	13,714	$ 24,517	48,718
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income		18,251		49,337
Comprehensive Income		15,319		49,061
Correction
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income		(1,605)		(343)
Comprehensive Income		$ (1,605)		$ (343)