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Significant Agreements (Details)	6 Months Ended
	Jun. 30, 2023 USD ($)
Significant Agreements (Details) [Line Items]
Sales milestone payments	$ 9,000,000
License maintenance fee	25,000
First and Second Year [Member]
Significant Agreements (Details) [Line Items]
Commercial sale	25,000
Third and Fourth Year [Member]
Significant Agreements (Details) [Line Items]
Commercial sale	35,000
Anniversary Ending [Member]
Significant Agreements (Details) [Line Items]
Commercial sale	50,000
ISRA [Member]
Significant Agreements (Details) [Line Items]
Option exercise fee	$ 1,000,000

X

- Definition

Commercial sale.

+ References

No definition available.

+ Details

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Namespace Prefix:	jspr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

License maintenance fee.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

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X

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of consideration recognized during the period for the milestone or milestones.

+ References

No definition available.

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X

- Details

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X

- Details

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