XML 57 R47.htm IDEA: XBRL DOCUMENT v3.23.2

Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions			6 Months Ended
	May 05, 2023	Jan. 31, 2023	Jun. 30, 2023
Common Stock [Abstract]
Shares of non-voting common stock (in Shares)			911,022
Common stock, shares issued (in Shares)			110,800,413
Sale of stock			$ 150.0
Common stock value			250.0
Price per share (in Dollars per share)		$ 69,000,000
Share issued (in Shares)		9,000,000
Underwriting agreement price (in Dollars per share)		$ 9,000,000
Total net proceeds		$ 4.5
Aggregate offering price	$ 75.0		15.5
Issued of aggregate of shares (in Shares)		2,337,496
Available offering amount			175.0
Offering cost			$ 75.0
IPO [Member]
Common Stock [Abstract]
Total net proceeds		$ 96.9
Common Stock [Member]
Common Stock [Abstract]
Shares of voting common stock (in Shares)			490,000,000
Shares of non-voting common stock (in Shares)			2,000,000
Preferred Stock [Member]
Common Stock [Abstract]
Shares of undesignated preferred stock (in Shares)			10,000,000

X

- Definition

Aggregate offering price.

+ References

No definition available.

+ Details

Name:	jspr_AggregateOfferingPrice
Namespace Prefix:	jspr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of available offering.

+ References

No definition available.

+ Details

Name:	jspr_AvailableOfferingAmount
Namespace Prefix:	jspr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

This amount of common stock value.

+ References

No definition available.

+ Details

Name:	jspr_CommonStock
Namespace Prefix:	jspr_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	jspr_CommonStockDetailsLineItems
Namespace Prefix:	jspr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Shares of voting common stock.

+ References

No definition available.

+ Details

Name:	jspr_CommonStockSharesOfVoting
Namespace Prefix:	jspr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Shares of non-voting common stock.

+ References

No definition available.

+ Details

Name:	jspr_SharesOfNonvotingCommonStock
Namespace Prefix:	jspr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Underwriting agreement price.

+ References

No definition available.

+ Details

Name:	jspr_UnderwritingAgreementPrice
Namespace Prefix:	jspr_
Data Type:	dtr:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_CommonStockSharesSubscribedButUnissued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-4

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-3

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482913/230-10-50-5

+ Details

Name:	us-gaap_ConversionOfStockSharesIssued1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.A)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480341/340-10-S99-1

+ Details

Name:	us-gaap_DeferredOfferingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The price per share or unit times the number of shares or units issued in an insurance entity stock offering in connection with its conversion from a mutual form of ownership to a stock entity. Amount is gross, before offering costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 944
-SubTopic 805
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479835/944-805-50-2

+ Details

Name:	us-gaap_DemutualizationByInsuranceEntitySecuritiesIssuedGrossCashProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Number of excess stock shares of an entity that have been sold or granted to shareholders.

+ References

No definition available.

+ Details

Name:	us-gaap_ExcessStockSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of shares of preferred stock issued as dividends during the period. Excludes stock splits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-2

+ Details

Name:	us-gaap_PreferredStockDividendsShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The cash inflow from the issuance of an equity stock that has been previously reacquired by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromSaleOfTreasuryStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_PreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: