Income Taxes - Reconciliation of Change in Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
Feb. 28, 2021	Feb. 29, 2020
Income Tax Disclosure [Abstract]
Beginning Balance	$ 100	$ 120
Additions based on tax positions	63
Reductions due to lapses of statues of limitations	(33)	(20)
Ending Balance	$ 130	$ 100

Amount of unrecognized tax benefits.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

Name:	us-gaap_UnrecognizedTaxBenefits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant