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Agreements Related to Intellectual Property (Details) - USD ($) $ in Thousands		3 Months Ended
	Mar. 01, 2018	Mar. 31, 2018
Agreements Related to Intellectual Property [Abstract]
Payable amount for additional budgeted amounts		$ 108
Intellectual property change in budget amount	$ (444)

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- References

No definition available.

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Namespace Prefix:	rckt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

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

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No definition available.

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Namespace Prefix:	rckt_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

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- Definition

Payable amount for additional budgeted amount for the period from March 2018 through August 2018.

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No definition available.

+ Details

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Namespace Prefix:	rckt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration