Agreements Related to Intellectual Property (Details) - USD ($) $ in Thousands		6 Months Ended
Mar. 01, 2018	Jun. 30, 2018
Agreements Related to Intellectual Property [Abstract]
Payable amount for additional budgeted amounts		$ 108
Intellectual property change in budget amount	$ (444)

The (decrease) during the reporting period in the intellectual property change in budget amount.

No definition available.

Name:	rckt_IntellectualPropertyChangeInBudgetAmount
Namespace Prefix:	rckt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration