Pension Plan - Schedule of Accumulated Benefit Obligation, Change in Projected Benefit Obligation, Change in Plan Assets, Funded Status, and Reconciliation to Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Change in benefit obligation
Projected benefit obligation at beginning of year	$ 60,845	$ 51,339
Service cost	1,301	1,122	$ 1,262
Interest cost	2,369	2,447	2,402
Actuarial (gain)/loss	(2,661)	6,637
Other assumption change	(1,603)	3,695
Benefits paid	(4,008)	(4,395)
Projected benefit obligation at end of year	56,243	60,845	51,339
Change in plan assets:
Fair value of plan assets at beginning of year	50,993	49,423
Company contributions	3,000	3,000
Gain (loss) on plan assets	(2,438)	2,965
Benefits paid	(4,008)	(4,395)
Fair value of plan assets at end of year	47,547	50,993	$ 49,423
Funded status (benefit obligation less plan assets)	(8,696)	(9,852)
Accumulated benefit obligation at end of year	$ 51,948	$ 56,170