SIGNIFICANT ACCOUNTING POLICIES - Revenue recognition (Details)	12 Months Ended
Dec. 31, 2019
Revenue Abstract
Standard payment terms (in days)	60 days

Term of standard payment with customers from date of invoice, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	nvcn_TermOfStandardPaymentOfCustomers
Namespace Prefix:	nvcn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration