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Inventories (Narrative) (Details) $ in Thousands | Oct. 03, 2020 USD ($)
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Inventories [Abstract] |
Non-cash inventory reserves related to impact of COVID-19 | $ 16,319

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- Definition Inventories [Abstract] + References No definition available. + Details
Name: | mog_InventoriesAbstract
Namespace Prefix: | mog_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Inventory Write-down Reserve for non-cash impairment impacts associated with COVID-19 pandemic + References No definition available. + Details
Name: | mog_InventoryWritedownReserve
Namespace Prefix: | mog_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant