Number of promissory notes issued.

No definition available.

Name:	jagx_NumberOfPromissoryNotesIssued
Namespace Prefix:	jagx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for the accrued interest of a borrowing supported by a written promise to pay an obligation.

+ References

No definition available.

+ Details

Name:	jagx_RepaymentsOfAccruedInterestOfNotesPayable
Namespace Prefix:	jagx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for the principal amount of a borrowing supported by a written promise to pay an obligation.

+ References

No definition available.

+ Details

Name:	jagx_RepaymentsOfPrincipalAmountOfNotesPayable
Namespace Prefix:	jagx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the warrant coverage percentage.

+ References

No definition available.

+ Details

Name:	jagx_WarrantCoveragePercentage
Namespace Prefix:	jagx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase.

+ References

No definition available.

+ Details

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

- Definition

The cash inflow from a borrowing supported by a written promise to pay an obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585

+ Details

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

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=jagx_PromissoryNotePurchaseAgreementsBridgeNotes2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=jagx_FourteenPromissoryNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=jagx_SevenPromissoryNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - 2019 Bridge Notes (Details)		3 Months Ended		4 Months Ended	12 Months Ended
Debt - 2019 Bridge Notes (Details)	Jul. 23, 2019 USD ($)	Jun. 30, 2019 USD ($) NotesSeries	Jun. 26, 2019 NotesSeries	Jun. 30, 2019 USD ($) item	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Oct. 31, 2019 USD ($)
Principal amount							$ 550,000
Net cash proceeds					$ 5,050,000	$ 2,564,938
2019 Bridge Notes
Number of promissory notes issued		21	21	21
Principal amount		$ 5,050,000		$ 5,050,000
Net cash proceeds		$ 5,050,000
Interest rate (as a percent)		12.00%		12.00%
Fair value of warrant		$ 5,005,742		$ 5,005,742
Repayments of Debt	$ 5,192,923
Principal amount pertaining to repayment of Notes payable	5,050,000
Accrued Interest pertaining to repayment of Notes payable	142,923
Extinguishment loss on repayment of Notes	$ 335,753
Fourteen Promissory Notes [Member]
Number of promissory notes issued		14		14
Principal amount		$ 3,550,000		$ 3,550,000
Warrant coverage percentage		125.00%		125.00%
Seven Promissory Notes [Member]
Number of promissory notes issued		7		7
Principal amount		$ 1,500,000		$ 1,500,000
Warrant coverage percentage		75.00%		75.00%