Restatement of Previously Issued Financial Statements - Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2017	May 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income	$ 12,062	$ 22,189
Comprehensive Income	11,051	24,654
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income	13,240	21,063
Comprehensive Income	12,229	23,528
Correction
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Income	(1,178)	1,126
Comprehensive Income	$ (1,178)	$ 1,126