Income Tax - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2018	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Deferred Tax Assets And Liabilities [Line Items]
Federal statutory tax rate	35.00%		35.00%	35.00%	35.00%
Impairment losses on intangible assets		$ 265		$ 9,843	$ 9,499
Decrease in valuation allowance		33,300
Valuation allowance	$ (27,099)	(27,099)	$ (27,099)	(60,379)
Amount recognized is measured as the largest benefit	50.00%
Uncertain tax positions	$ 100	100	100
Unrecognized tax benefits that would reduce, if recognized, provision for income taxes	100	100	100
Interest accrued related to unrecognized tax benefits	6	6	$ 6
Federal statutory tax rate - revised			21.00%
Adjustment to federal deferred - tax reform		15,546		$ 0	$ 0
Adjustment to state deferred - tax reform		1,400
Federal
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance		32,700
Operating Loss Carryforwards	18,000	18,000	$ 18,000
State and Local Jurisdiction
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance		0
Operating Loss Carryforwards	144,000	144,000	144,000
Digonex | Federal
Deferred Tax Assets And Liabilities [Line Items]
Operating Loss Carryforward, Determined to be Available to Offset Future Income	18,000	18,000	18,000
Operating Loss Carryforwards	47,000	47,000	47,000
Digonex | State and Local Jurisdiction
Deferred Tax Assets And Liabilities [Line Items]
Operating Loss Carryforward, Determined to be Available to Offset Future Income	18,000	18,000	18,000
Operating Loss Carryforwards	$ 47,000	$ 47,000	$ 47,000