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v3.19.3.a.u2

Leases Details Textuals (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Lessee, Lease, Description [Line Items] |  |  |
Impairment of leased right-of-use assets | $ 9,240 | $ 0 | $ 0
Income statement impact, lease termination | (1,200) |  |
Gain on extinguishment of lease liabilities | 10,437 | 0 | 0
Net gain on extinguishment of lease liabilities | (10,100) |  |
Other related liabilities, lease termination | 300 |  |
Impairment of Leasehold | $ 1,442 | $ 735 | $ 0

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- Definition Gain on extinguishment of lease liabilities due to early termination of lease agreement. + References No definition available. + Details
Name: | mxl_Gainonextinguishmentofleaseliabilities
Namespace Prefix: | mxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Impairment of right of use asset + References No definition available. + Details
Name: | mxl_Impairmentofrightofuseasset
Namespace Prefix: | mxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Income statement impact, lease termination + References No definition available. + Details
Name: | mxl_Incomestatementimpactleasetermination
Namespace Prefix: | mxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Net gain on extinguishment of lease liabilities + References No definition available. + Details
Name: | mxl_Netgainonextinguishmentofleaseliabilities
Namespace Prefix: | mxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Other related liabilities, lease termination + References No definition available. + Details
Name: | mxl_Otherrelatedliabilitiesleasetermination
Namespace Prefix: | mxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration