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v3.20.4

Restructuring (Narrative) (Details) | 1 Months Ended
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Jun. 30, 2019
June 2019 Plan [Member] |
Restructuring Cost and Reserve [Line Items] |
Approximate reduction in workforce from restructuring plan (percent) | 2.00%
August 2020 Plan |
Restructuring Cost and Reserve [Line Items] |
Approximate reduction in workforce from restructuring plan (percent) | 14.00%
January 2020 Plan |
Restructuring Cost and Reserve [Line Items] |
Approximate reduction in workforce from restructuring plan (percent) | 400.00%

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- Definition The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RestructuringPlanAxis=pxlw_June2019PlanMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RestructuringPlanAxis=pxlw_August2020PlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RestructuringPlanAxis=pxlw_January2020PlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |