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

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.

No definition available.

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