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Revenue Recognition (Details) - Software license and related revenues and consulting services [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)
2019	$ 5,281
2020	5,183
2021 and thereafter	$ 969

X

- Definition

Future estimated revenue expected to be recognized within one year.

+ References

No definition available.

+ Details

Name:	mgic_EstimatedRevenueExpectedToRecognizedInFuturePeriodsInCurrent
Namespace Prefix:	mgic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Future estimated revenue expected to be recognized within the second year.

+ References

No definition available.

+ Details

Name:	mgic_EstimatedRevenueExpectedToRecognizedInFuturePeriodsInTwoYears
Namespace Prefix:	mgic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Future estimated revenue expected to be recognized.

+ References

No definition available.

+ Details

Name:	mgic_EstimatedRevenueExpectedToRecognizedInFuturePeriodsThereafter
Namespace Prefix:	mgic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	srt_ProductOrServiceAxis=mgic_SoftwareLicenseAndRelatedRevenuesAndConsultingServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: