Loss Per Share - Additional Information (Detail)		3 Months Ended	9 Months Ended
Jun. 20, 2019	Nov. 30, 2019 shares	Dec. 01, 2018 shares	Nov. 30, 2019 shares	Dec. 01, 2018 shares
Earnings Per Share [Abstract]
Outstanding stock options excluded from computation of diluted earnings per share		597,900	122,200	516,500	106,400
Reverse stock split ratio	0.05

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration