Nature of Business (Details)	6 Months Ended
Jun. 30, 2019 Program
Programs in Clinical Testing [Abstract]
Number of additional programs in preclinical stages targeting other rare genetic diseases	2

The number of additional programs currently under preclinical stages targeting other rare genetic diseases.

No definition available.

Name:	rckt_NumberOfAdditionalProgramsUnderPreclinicalStagesTargetingOtherRareGeneticDiseases
Namespace Prefix:	rckt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration