Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 11, 2021
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-37350
Entity Registrant Name	InVivo Therapeutics Holdings Corp.
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	36-4528166
Entity Address, Address Line One	One Kendall Square
Entity Address, Address Line Two	Suite B14402
Entity Address, City or Town	Cambridge
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02139
City Area Code	617
Local Phone Number	863-5500
Entity Current Reporting Status	Yes
Title of 12(b) Security	Common Stock
Trading Symbol	NVIV
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		34,264,806
Entity Central Index Key	0001292519
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false