Revenues Future Revenues (Details)	3 Months Ended
	May 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation	The Company expects to recognize revenues of approximately $17.9 million, $2.0 million, $2.3 million and $0.1 million in fiscal 2020, 2021, 2022 and 2023