Pension Plan - Pension Plan's Fair Value Hierarchy for Assets Measured at Fair Value (Detail) - USD ($) $ in Thousands	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	$ 59,023	$ 59,719	$ 60,600
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	2,172	1,545
Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	8,623	8,592
Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	14,941	15,593
Domestic Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	26,582	20,935
Foreign Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	6,705	13,054
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	35,459	35,534
Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	2,172	1,545
Level 1 [Member] | Domestic Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	26,582	20,935
Level 1 [Member] | Foreign Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	6,705	13,054
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	23,564	24,185
Level 2 [Member] | Government Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	8,623	8,592
Level 2 [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurements	$ 14,941	$ 15,593