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Debt Obligations - Schedule of Fair Value of Debentures Activity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Debt Disclosure [Abstract]
Beginning balance, Proceeds investment agreement	$ 6,500,000
Repayment of obligation
Change in the fair value during the period	(307,000)	$ 137,000
Ending balance, Proceeds investment agreement	$ 6,193,000

X

- Definition

Change in fair value of proceeds investment agreement.

+ References

No definition available.

+ Details

Name:	DGLY_ChangeInFairValueOfProceedsInvestmentAgreement
Namespace Prefix:	DGLY_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Proceeds investment agreement, at fair value.

+ References

No definition available.

+ Details

Name:	DGLY_ProceedsInvestmentAgreementAtFairValue
Namespace Prefix:	DGLY_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of the required periodic payments applied to principal.

+ 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)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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