Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Commitment And Contingencies [Line Items]
Lease Rent Expense	$ 800	$ 700
Chief Executive Officer
Commitment And Contingencies [Line Items]
Lease Rent Expense	$ 314	$ 314
Maximum
Commitment And Contingencies [Line Items]
Lease expiration year	2019
Maximum | Chief Executive Officer
Commitment And Contingencies [Line Items]
Lease expiration year	2018