Effect of Derivative Financial Instruments on Consolidated Statement of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 31, 2013	May 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on derivative (effective portion)	$ 66
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(22)
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Interest Rate Swap Agreements
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on derivative (effective portion)	66
Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Interest expense
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(22)
Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	N/A
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)