Summary of Significant Accounting Policies - Reverse Stock Split (Details)	Sep. 16, 2022
Summary of Significant Accounting Policies
Conversion ratio of common stock to ordinary shares	0.04%

Ratio applied to the conversion of reverse stock split, for example but not limited to, one share converted to two or two shares converted to one.

No definition available.

Name:	nbrv_StockholdersEquityNoteReverseStockSplitConversionRatio
Namespace Prefix:	nbrv_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration