Income Tax - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Deferred Tax Assets And Liabilities [Line Items]
Impairment losses on intangible assets	$ 9,499	$ 67,915	$ 0
Decrease in valuation allowance	3,700
Valuation allowance	(66,674)	(62,984)
Unrealized benefit related to share-based compensation	2,700
Tax credits related to alternative minimum tax carryforwards	$ 3,300
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	$ 200
Interest accrued related to unrecognized tax benefits	9
Federal
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance	2,400
Operating Loss Carryforwards	82,000
State and Local Jurisdiction
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance	0
Operating Loss Carryforwards	185,000
Digonex | Federal
Deferred Tax Assets And Liabilities [Line Items]
Operating Loss Carryforward, Determined to be Available to Offset Future Income	13,000
Operating Loss Carryforwards	43,000
Digonex | State and Local Jurisdiction
Deferred Tax Assets And Liabilities [Line Items]
Operating Loss Carryforward, Determined to be Available to Offset Future Income	13,000
Operating Loss Carryforwards	$ 43,000