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Intangible Assets, Net (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Intangible Assets (Textual) |  |  |
Amortization expense of intangible assets | $ 12,764 | $ 11,389 | $ 12,565

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References No definition available. + Details
Name: | mgic_AmortizationExpenseOfIntangibleAssets
Namespace Prefix: | mgic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | mgic_IntangibleAssetsTextualAbstract
Namespace Prefix: | mgic_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration