Income Tax - Additional Information (Detail) (USD $)	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Deferred Tax Assets And Liabilities [Line Items]
Impairment losses on intangible assets	$ 67,915,000	$ 0	$ 11,419,000
Income (loss) before income taxes	(59,037,000)	14,592,000	(8,868,000)
Decrease in valuation allowance	62,000,000
Valuation allowance	(62,984,000)	(970,000)
Unrealized benefit related to share-based compensation	2,700,000
Tax credits related to alternative minimum tax carryforwards	2,000,000
Amount recognized is measured as the largest benefit	50.00%
Uncertain tax positions	200,000
Unrecognized tax benefits that would reduce, if recognized, provision for income taxes	200,000	200,000
Interest accrued related to unrecognized tax benefits	26,000
Federal
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance	50,300,000
Operating Loss Carryforwards	77,000,000
State and Local Jurisdiction
Deferred Tax Assets And Liabilities [Line Items]
Decrease in valuation allowance	0
Operating Loss Carryforwards	192,000,000
Digonex | Federal
Deferred Tax Assets And Liabilities [Line Items]
Operating Loss Carryforward, Determined to be Available to Offset Future Income	10,000,000
Operating Loss Carryforwards	40,000,000
Digonex | State and Local Jurisdiction
Deferred Tax Assets And Liabilities [Line Items]
Operating Loss Carryforward, Determined to be Available to Offset Future Income	10,000,000
Operating Loss Carryforwards	$ 40,000,000