Pension Plan - Schedule of Accumulated Benefit Obligation, Change in PBO, Change in Pension Plan Assets, Funded Status, and Reconciliation to Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Change in benefit obligation
Projected benefit obligation at beginning of year	$ 57,141	$ 57,619
Service cost	1,088	1,106	$ 1,083
Interest cost	2,254	2,274	2,270
Actuarial (gain) loss	12,853	(367)
Other assumption change	(549)	(120)
Benefits paid	(3,251)	(3,371)
Projected benefit obligation at end of year	69,536	57,141	57,619
Change in plan assets:
Fair value of plan assets at beginning of year	57,721	56,884
Company contributions	3,000	3,000
Gain on plan assets	3,130	1,208
Benefits paid	(3,251)	(3,371)
Fair value of plan assets at end of year	60,600	57,721	$ 56,884
Funded (unfunded) status	(8,936)	580
Accumulated benefit obligation at end of year	$ 63,340	$ 52,747