Related Party (Details 1) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Notes payable - related party, gross	$ 5,155,863	$ 1,231,695
Less: Debt Discount		(8,125)
Less: Debt Issuance Costs	(26,521)
Notes payable	5,129,342	1,223,073
Less: Current Debt	(5,129,342)	(1,223,073)
Notes payable - related party, net
The May 2016 Rosen Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross		1,000,000
Interest Rate	13.00%
Maturity Date	Nov. 26, 2017
Warrants, Quantity	50,000
Warrants, Exercise Price	$ 8.00
The June 2018 Frommer Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross	$ 10,000	10,000
Interest Rate	6.00%
Maturity Date	Aug. 17, 2018
Warrants, Quantity	1,500
Warrants, Exercise Price	$ 4.00
The July 2018 Rosen Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross		56,695
Interest Rate	6.00%
Maturity Date	Aug. 17, 2018
Warrants, Quantity	1,500
Warrants, Exercise Price	$ 4.00
The July 2018 Schiller Loan Agreements [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross	$ 20,863	40,000
Interest Rate	6.00%
Maturity Date	Aug. 17, 2018
Warrants, Quantity	7,500
Warrants, Exercise Price	$ 4.00
The December 2018 Gravitas Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross		50,000
Interest Rate	6.00%
Maturity Date	Jan. 22, 2019
Warrants, Quantity	2,500
Warrants, Exercise Price	$ 6.00
The December 2018 Rosen Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross		75,000
Interest Rate	6.00%
Maturity Date	Jan. 26, 2019
Warrants, Quantity	3,750
Warrants, Exercise Price	$ 6.00
The January 2019 Rosen Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross
Interest Rate	10.00%
Maturity Date	Feb. 15, 2019
Warrants, Quantity	15,000
Warrants, Exercise Price	$ 6.00
The February 2019 Gravitas Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross
Interest Rate	5.00%
Maturity Date	Feb. 28, 2019
Warrants, Quantity	375
Warrants, Exercise Price	$ 6.00
The February 2019 Rosen Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross
Interest Rate	10.00%
Maturity Date	Feb. 28, 2019
Warrants, Quantity	5,000
Warrants, Exercise Price	$ 6.00
The June 2019 Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross	$ 4,825,000
Interest Rate	12.50%
Maturity Date	Dec. 03, 2019
Warrants, Quantity
Warrants, Exercise Price
The July 2019 Gravitas Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross
Interest Rate	5.00%
Maturity Date	Sep. 01, 2019
Warrants, Quantity	1,000
Warrants, Exercise Price	$ 6.00
The September 2019 Schiller Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross
Interest Rate	4.50%
Maturity Date	Oct. 09, 2019
Warrants, Quantity	1,000
Warrants, Exercise Price	$ 6.00
The September 2019 Tal Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross
Interest Rate	5.00%
Maturity Date	Oct. 07, 2019
Warrants, Quantity	188
Warrants, Exercise Price	$ 6.00
The December 2019 Gravitas Loan Agreement [Member]
Related Party Transaction [Line Items]
Notes payable - related party, gross	$ 300,000
Interest Rate	6.70%
Maturity Date	Mar. 01, 2020
Warrants, Quantity
Warrants, Exercise Price

Debt discount.

No definition available.

Name:	jmda_DebtDiscount
Namespace Prefix:	jmda_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount for notes payable (written promise to pay), due to related parties.

+ References

No definition available.

+ Details

Name:	jmda_NotePayablesRelatedPartiesCurrentAndNoncurrent
Namespace Prefix:	jmda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of Notes payable Debt After Discount.

+ References

No definition available.

+ Details

Name:	jmda_NotesPayableDebtAfterDiscount
Namespace Prefix:	jmda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of Notes Payable, Related Parties Net.

+ References

No definition available.

+ Details

Name:	jmda_NotesPayableRelatedPartiesNet
Namespace Prefix:	jmda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of related party debt.

+ References

No definition available.

+ Details

Name:	jmda_RelatedPartyDebtCurrent
Namespace Prefix:	jmda_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Per share increase in exercise price of warrant.

+ References

No definition available.

+ Details

Name:	jmda_WarrantExercisePrice
Namespace Prefix:	jmda_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of warrants issued.

+ References

No definition available.

+ Details

Name:	jmda_WarrantsIssued
Namespace Prefix:	jmda_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ 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 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_NotesPayableRelatedPartyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_NotesPayableRelatedPartyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_NotesPayableRelatedPartyTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_NotesPayableRelatedPartyTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_NotesPayableRelatedPartyTwentyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_NotesPayableRelatedPartyTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_JanuaryTwoThousandNineteenRosenLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_FebruaryTwoThousandNineteenGravitasLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_FebruaryTwoThousandNineteenRosenLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_JuneTwoThousandNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_JulyTwoThousandNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_SeptemberTwoThousandNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_SeptemberTwoThousandNineteenTalLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=jmda_DecemberTwoThousandNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: