Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Deferred Tax Assets And Liabilities [Line Items]
Federal statutory income tax rate	21.00%	35.00%	35.00%
Adjustment to federal deferred - tax reform	$ 0	$ 15,546	$ 0
Adjustment to state deferred - tax reform		1,400
Decrease in valuation allowance	400
Valuation allowance	26,724	27,099
Tax credit	$ 1,500
Amount recognized is measured as the largest benefit	50.00%
Uncertain tax positions	$ 100
Unrecognized tax benefits that would reduce, if recognized, provision for income taxes	100	$ 100
Interest accrued related to unrecognized tax benefits	4
Federal
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance	700
Operating loss carryforwards	20,000
Federal | Digonex
Deferred Tax Assets And Liabilities [Line Items]
Operating loss carryforwards	49,000
Operating loss carryforward, determined to be available to offset future income	20,000
State and Local Jurisdiction
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance	1,100
Operating loss carryforwards	135,000
State and Local Jurisdiction | Digonex
Deferred Tax Assets And Liabilities [Line Items]
Operating loss carryforwards	49,000
Operating loss carryforward, determined to be available to offset future income	$ 20,000