Insurance Claim - Additional Information (Detail) (USD $)	3 Months Ended
Mar. 31, 2013
Receivables [Abstract]
Insurance proceeds from settlement of business interruption	$ 1,100,000

Insurance proceeds from settlement of business interruption.

No definition available.

Name:	nviv_InsuranceProceedsFromSettlementOfBusinessInterruption
Namespace Prefix:	nviv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration